Perfect square program in java without using sqrt. If they are equal, the original number is a perfect square.

Perfect square program in java without using sqrt. Condition: i * i = number. It covers essential concepts such as using the Math. So, what we need to do is to cast the result to int and multiply it by itself. Method-1: Java Program to Check a Given Number is Perfect Square By Using Static Value GeeksforGeeks | A computer science portal for geeks Have a hassle free one stop solution for up-skilling and preparing. Description The Math. The square root of 125 is represented as 5 √5. For example – Example 1: Input: 4 Output: 2 Example 2 Jul 23, 2025 · In this article, we will understand how to print all perfect squares from a list in Python using the list comprehension and math module. Jan 18, 2022 · we are going to learn how to check if a given number is a perfect square or not without using sqrt in Java. It then verifies if the square of the calculated root is equal to the original number. sqrt (16) = 4. 6 and when you add . We will talk about two common approaches: using user-defined logic and the built-in Math. Compare the square of the mid integer with the given number. To find a square root, you simply need to find a number which, raised to the power of 2 (although just multiplying by itself is a lot easier programmatically ;) ) gives back the input. If the cube of this number equals N, then N is a perfect cube otherwise N is not a perfect cube. Floor square root of a number is the greatest whole number which is less than or equal to its square root. For example, math. If the integer is not the perfect square, return largest integer that is smaller than or equal to square root of N i. In this program, we will find the square root without using that sqrt function. Code Implementation: In the following example, we have implemented a user-defined method called checkPerfectSquare (). Inside the method, we calculate the square root of the number using the Math. 0 returns True. We will also test the program with various inputs, including negative numbers and numbers that are not perfect squares, to ensure its robustness. Write a Java program to determine if a given positive integer is a perfect square without using the Math. isqrt (num) # Get the integer square root return sqrt * sqrt == num # Check if square of sqrt equals num # Taking user input number = int (input ("Enter a number: ")) # Checking Mar 9, 2015 · Given an integer n, calculate the square of a number without using *, / and pow (). Squares of a number are very easy to find. sqrt () function or any other built-in square root function. Oct 27, 2022 · An integer that can be expressed as the square of another integer is called a perfect square, such as 4,9,16,25, etc. Valid Perfect Square in Python, Java, C++ and more. Example 1: Input: x = 4 Output: 2 Explanation: The square root Jul 15, 2025 · Learn ways to find perfect number in Java with clear examples and smart code tweaks. If n becomes zero, it means that n is a perfect square. Id presume you just look for whatever algorithm is used in the math. Jun 14, 2020 · Given a positive integer, We have to write a code to returns true if it is a perfect square else false. floor () to check if the square root is an integer. The main function that is present in the math module that we will be using is the sqrt () and floor () function. The terms are I don't use a sqrt function or an exponent (**) I previously showed my teacher my solution using Aug 12, 2025 · Given a positive integer n, find its square root. Mar 8, 2016 · To find the square root of a perfect square you should keep on subtracting it with consecutive odd numbers (starting from one) until it is zero. If the Can you solve this real interview question? Sqrt(x) - Given a non-negative integer x, return the square root of x rounded down to the nearest integer. Therefore, the number will be In Java, we have a Math. 1. sqrt (13) is 3. In Java, square roots are computed for non-negative numbers in real numbers, while complex numbers require specialized handling. Sep 1, 2022 · It is solution with O (n). Mar 30, 2023 · Approach 2: Start iterating from i = 1. Now, take something like x = 8, It Time out. I end up with this working code in C++ #include &lt;iostream Jan 15, 2025 · How the Code Works? Input: The program asks the user to input a number, which will be checked to see if it’s a perfect square. However, in this section, we will focus on creating a Java program that determines the square root of a number without utilizing the sqrt () method. Java Math class provides sqrt () method to find the square root of a number. I declared the necessary variables, added a for loop, added a sqroot = Math. The square root of number N lies in range 0 ? squareRoot ? N. Examples: Input: N = 36 Output: 6 Explanation: The square root of 36 is 6. This program check square number using sqrt function. sqrt (…) method is part of the Math class. How to calculate square root in java without sqrt function. The following program prints perfect numbers between 1 and 100. Examples : Input: n = 5 Output: 25 Input: 7 Output: 49 Input: n = 12 Output: 144 A Simple Solution is to repeatedly add n to result. Square Root Calculation: The Math. Write a Java Program to check if the given number is a perfect square or not. sqrt () method is used to calculate the square root of the given number. If the input was a perfect square int, the result will be an integer-valued double that is in the int range. . Binary Search - Valid Perfect SquareSolution 1 - Using binary search In the problem statement, it is mentioned that we cannot use any inbuilt functions such as Math. sqrt(num). Here on this page, we will learn how to Check for Perfect Square in Java programming language using two methods. sqrt() method returns the square root of a number. Using the sqrt Method in Java The easiest and most straightforward way to check whether an integer is a perfect square is to use the sqrt function. By only looping up to the square root, we can reduce the amount of work needed to find the divisors and improve efficiency. Below is the implementation of above approach: Mar 5, 2024 · The initial estimate for Heron’s method doesn’t need to be a perfect square There are several ways of getting an initial estimate of the square root without calculating a square root (also one that involves computing the square root of a number between 0 and 100, which your program already does) Dec 21, 2024 · Java programming exercises and solution: Write a Java program to test if a given number (positive integer) is a perfect square or not. To gain full voting privileges, I typed this up quickly as an intuitive solution for determining if a given number is a perfect square. This method takes a double argument and checks whether the number is a perfect square. Aug 13, 2025 · For example, 6 is a perfect number because its proper divisors (1, 2, & 3) add up to 6. In very simple terms, the square root of L will be very close to the number whose square root we are trying to find. Below is the implementation of the above approach: Mar 31, 2025 · If the square root is an integer, the original number is a perfect square. Jun 23, 2022 · Here you will find the code for Python program to check if a number is a perfect square with and without the sqrt() function. Jun 6, 2023 · Method 1: Using the math module’s sqrt () function To determine the square root of an integer, use the sqrt () function from the math module. The name of JavaScript square root function is Math. Jul 12, 2025 · Using Build-in Functions: The idea is to use the inbuilt function (cbrt ()) to find the cube root of a number which returns floor value of the cube root of the number N. sqrt () method to find out the square root of any number. Jan 8, 2020 · This tutorial explains how to find square root in Java using Java Math. We import the math module first, and then we give the num variable a value. 00001 Output: 18. Hence, we can check for each value from 1 to X if it is the given number's square root. Math class that comes bundled with Java contains various methods for performing basic numeric operations such as the elementary exponential, logarithm, square root, and trigonometric functions. 5). Method 1: Iterative Approach This method involves iterating over a range of numbers and squaring each one until it is How could I check if a number is a perfect square? Speed is of no concern, for now, just working. Best way to calculate the square root without using a sqrt () function? (in a tech interview) As far as I know of there are two methods to calculate the square root: newtons method and a modified binary search,. Given a number N, the task is to find the square root of N without using sqrt() function. we are learn today what is inside sqrt () function,c language,c++ 3. Find mid of i - 1 and i and compare mid * mid with n, with precision upto 5 decimal GeeksforGeeks | A computer science portal for geeks Sep 17, 2024 · Using sqrt () Take the floor ()ed square root of the number. Then, we calculate the floor value of the calculated square root using the Aug 1, 2019 · I have to write a program that finds out whether or not a number is a perfect square. (we're trying to round, that's why we add the . Nov 10, 2022 · Best way to calculate the square root of any number in ios , Objective C and Swift Finding square root without using sqrt function? Take input x = 4 or any perfect square, it works fine. Generally, whenever we find the square root of an Integer number, we only get the result in Integer. Similarly, conversion of that integer-valued double back to an int is also exact. Integer Comparison: We then use Math. 5 in python. Here’s how you can implement the Can you solve this real interview question? Valid Perfect Square - Given a positive integer num, return true if num is a perfect square or false otherwise. Swift is a general-purpose programming language built using a modern approach to safety, performance, and software design patterns. Oct 12, 2019 · The java. The square root value is stored in a variable called squareRoot. A number which can be expressed as square of any integer is called perfect square number. Oct 1, 2024 · The number is passed into the square root function and the result is passed to the floor function to raise the double it to the next integer. Introduction to Squares in Java When a number is multiplied by itself, the resulting number formed is the Square of the Number. Calculate its floor value using floor function in C++. This is done by multiplying the square root (sqrt) by itself and comparing the result with the original number. We will discuss the mathematical principles involved, as well as provide a step-by-step guide on how to implement this process in programming languages such as Python, Java, and C++. A perfect square is an integer that is the square of an integer. The program then checks if the square of this integer square root equals the original number. Solutions: Method 1: Using the Babylonian Algorithm Relying on floating-point computations like math. sqrt is specified, for normal positive numbers, to return "the double value closest to the true mathematical square root of the argument value". It does this by iterating over the odd numbers, starting from 1 and subtracting them from the given number n. ly/2ZGeBFC Here we will learn a Java program to find square root of a Number without sqrt method. sqrt and by using Math. Can you solve this real interview question? Sqrt(x) - Given a non-negative integer x, return the square root of x rounded down to the nearest integer. 46 and when you add . Below is the implementation of this idea. Jul 23, 2025 · The complexity of the above method Time Complexity: O (n) 2. Dec 1, 2016 · 367. An Alternative Approach Since a perfect square is a number where the square root is equal to a whole number, you could also check to see if the square root is divisible by 1 with no remainder. 125 can be written as the sum of two squares in two distinct ways: 125 = 102 + 52 or 112 + 22. Here is the link of Full Play List https://bit. Instead, a pure integer approach is recommended. Multiply the square root twice. Make your programs faster and impress in interviews! Jul 22, 2022 · In Java, to find the square root of a number is very easy if we are using the pre-defined method. sqrt() function, conditional statements, and user input handling, making it a valuable exercise for beginners learning Java programming. sqrt() function in Java. I'm working on a program to have the user enter a number to see if it's a perfect square. Link to my website: https://av Jul 5, 2024 · One of the most popular frequently asked Java Interview Question is, “ Given an integer x, write a java program to find the square root of it”. * For example, do not use pow(x, 0. org/plus/dsa/pro Sep 24, 2019 · So I'm trying to find out the perfect squares within a set of numbers. Please help me out, what I am doing wrong. If i is a divisor then n/i is also a divisor. You must not use any built-in exponent function or operator. Example 1: Using for loop, we will check if the current element is the square root of the given number or not. This article will guide you exactly how to use Math. In Aug 6, 2018 · I am new to javascript and taking some tests on codewars, I am writing a code that checks for perfect numbers i. Hopefully somebody can help me out. In this article, we will learn different ways to check if a number is a perfect number using Java programming language. Feb 21, 2022 · Follow the below program to find square root of a number without using standard library function - sqrt() in c and java. Write a progran that checks if a number is a perfect square. As you can Flowchart: Java Code: The following code shows how to get the square root without using the function in Java. 0831 Newton's Method: Let N be any number then the square root of N can be given by the formula: root = 0. Dec 29, 2024 · In this article, we will explore how to find the number of perfect squares between two given numbers using programming. Oct 12, 2020 · This tutorial has the program to determine whether a given number is a perfect square or not in C++ with code output and program. May 7, 2021 · A perfect square is an integer that is the square of an integer; in other words, it is the product of some integer with itself. all thing understand in the video. Nov 13, 2024 · Ways to Check for the Perfect Square Let's discuss different methods to check if a given number is a perfect square in Java. Intuitions, example walk through, and complexity analysis. * * Note: Do not use any built-in library function such as sqrt. The problem may look easy because you might know how to find the square root of a number but it's not. Print square of that number. However in this tutorial we will do something different, we will write a java program to find the square root of a number without the sqrt () method. The Math class in Java offers the sqrt () method specifically for this purpose. A perfect square is a number that is the square of an integer. Sep 9, 2025 · Given a positive number, check if it is a perfect square without using any built-in library function. Implementation in Java class Main{ public static int mySqrt(int x) { //It will store the square root of x long sqrt = 0; /* Running a for loop and checking every possible value for the square root. Write a code to compute the square root of x. Aug 8, 2022 · #java #program to Find #squareroot of a #number without #sqrt Method || Live demo in #eclipse || HINDI Video highlights: Find the square root of a Java program without using math sqrt? Find the Jan 8, 2024 · 2. Calculating square roots can be crucial in certain types of visual representations, such as plotting points on a graph or creating shapes and animations with geometric precision. 5 to check for perfect squares can lead to inaccuracies, especially with very large integers. or Write a program to check whether a given number is a perfect square number or not in Java. Jul 23, 2025 · Your All-in-One Learning Portal: GeeksforGeeks is a comprehensive educational platform that empowers learners across domains-spanning computer science and programming, school education, upskilling, commerce, software tools, competitive exams, and more. Given an integer x (non-negative integer). Input: n = 11 Output: 3 Explanation: The square root of 11 lies in between 3 and 4 so floor of the square root is 3. Then add 1 to it. If x is not a perfect square in that case return floor of square root of x (floor (sqrt (x))). Then it is compared with the number, if both are same then it is said to be a perfect square number. moreover the use of number of square roots leads to computational expense. The number of times it could be subtracted is the square root of that number. Let's see the output of these two functions one by one. sqrt () function. sqrt() in Java to calculate square roots easily. 5f); You don't need to check between the ceil or the floor of which is greater, doing a simple round does the trick. For example, 1, 4, 9, and 16 are perfect squares while 3 and 11 are… Aug 27, 2024 · No, 125 is not a perfect square. Sunny Number A number n is called Sunny number if the next number (n+1) is a perfect square number. There are many ways to solve this problem. In this section, we will create a Java program to find the square root of a number without using the sqrt () method. Jul 1, 2025 · Write a program to calculate the square root of a number in Java or C++ is one of the popular coding interview questions from Programming job interviews both on tech companies like Facebook, Amazon, and investment banks like Citibank and Bank Of America, etc. Finally, the sum of divisors (excluding the number itself) is compared with the original number. Mar 9, 2023 · Check if a number is a perfect square or not in Java. IN C PROGRAMMING AND C++ PROGRAMMING a very important video for programmer why because. Examples : Input: n = 4 Output: 2 Explanation: The square root of 4 is 2. JavaScript Square Root Function JavaScript provides us with a built-in function to calculate the square root. How could I improve this? I already know that it doesn't handle the case where the number is 1. Examples: Input: N = 16, L = 0. If they are equal, the original number is a perfect square. Now I wrote the program in Java (which is my first language) and translated it to Python (which i'm still frankly new with), and the program works 100% how it's supposed to, so here's the code for that: Oct 16, 2024 · The binary search can be optimized further by checking from 0 until X/2, as the square root of a number cannot be higher than number/2. Jul 15, 2025 · Auxiliary space: O (1) Method 2: Using Binary Search: This approach is used to find the square root of the given number N with precision upto 5 decimal places. Here, we will use the below logic to find the square root of a number. Sep 26, 2023 · And the square function worked but the only problem is that I can't figure out how to change the last method to make a square root function without loops (no while loops and no for loops) Feb 23, 2019 · Finding square root of a number is very easy, we can use the Math. That's all about how to calculate square root of an integer in Java without using any library method. ) in DrJava? Mar 31, 2021 · In this program, we will learn how to find the square root of a number in java without using a pre-defined method. Dec 30, 2019 · Write a program to find out all perfect square numbers present within a given range in c, c++, java, python Jul 23, 2025 · Given a number N, the task is to calculate the square root of a given number using JavaScript. Definition and Usage The sqrt() method returns the square root of a number. Else find the smallest i for which i * i is strictly greater than n. sqrt function. If n is not a perfect square, then return floor of √n. Feb 1, 2022 · Find Square Root of an Integer. Example 1: Input: x = 4 Output: 2 Explanation: The square root How could I write an if-then statement that checks if an inputted integer is a perfect square or not (i. In this article, let’s check out different ways to find square and square root in Java. sqrt(15) = 3. In this guide, you’ll discover both methods and learn how to apply Mar 27, 2024 · The square root of the number X can be between 1 and X only. We will also write a program to find all the Sunny numbers in a given range. ------Additional tutorials---- 💚 JAVA 👉 • Introduction to java for Apr 3, 2024 · Complexity of the above Program: Time Complexity: O (n) Space Complexity: O (1) Method 2: Using Primilaity Test In this method, we use the fact that every equal square has a different prime multiplier to check if the square of the square root is equal to the input number. Nov 17, 2008 · I'm looking for the fastest way to determine if a long value is a perfect square (i. h file, copy and paste whatever algorithm it is that solves the square root. if I took the square root, it would be an integer as well: 4, 9, 16, 25, 36, etc. In Java, calculating the square root of a number becomes simple when using the built-in method. 5 casts to 4. sqrt () method and assign it to a variable called sqrt. Now we know square root of n lies in the interval i - 1 and i and we can use Binary Search algorithm to find the square root. If the matching value of the number’s square root is an integer, the number is said to be a perfect square. Example: Jul 12, 2025 · Given a number N, the task is to find the floor square root of the number N without using the built-in square root function. We iterate through the range of values and then check whether each number is a perfect number or not. It is the most popular question asked in the Java Through hands-on coding exercises, you will implement a Java program that takes user input, calculates the square root, and determines if the original number is a perfect square. I believe everything is working except for meeting the condition of the while loop. 0001 Output: 4 42 = 16 Input: N = 327, L = 0. Mar 3, 2024 · Problem Formulation: This article addresses the challenge of determining whether a given number is a perfect square in Python without utilizing the sqrt() function. Apr 12, 2024 · The stream-based method uses Java Streams to filter and sum the divisors up to the square root of the number. Nov 23, 2024 · See also: Integer square root in Python to enhance your understanding of the concept. See also: Integer square root in python. The Python program checks if a number is a perfect square by calculating its square root using the exponentiation operator **. The returned integer should be non-negative as well. Checkout the problem link 👇🏼 Finding Sqrt of a number using Binary Search https://takeuforward. floor with Math. Jan 18, 2022 · In this post, we are going to learn how to check if a given number is a perfect square or not without using sqrt in Java. Math. May 15, 2023 · In this guide, we’ll explore how to implement a Java program to determine if a given number is a perfect square, covering different approaches and considerations for efficient implementation. Sep 12, 2019 · Method 2: Java Program to Find the square root of a Number using java. lang. It is the most popular question asked in the Java interview. Feb 2, 2013 · Using if,else how could you make it return a perfect square like sqrt of 9=3 but false if the square root of that number is a decimal for example squareroot of 10 would be 3. Explore step-by-step implementation and examples. While Java provides the sqrt function to calculate square roots, you might want to know how to find the square root in Java without sqrt. I'm wondering if I could generalize the calculation so it rounds up. For example, 1, 4, 9, and 16 are perfect squares while 3 and 11 are not. more Dec 14, 2022 · In Java, finding the square root of a number is very easy if we are using the pre-defined method. Methods to Write a Prime Number Program in Java For checking a prime number in Java, there are no formulae available but there are a few methods available to check if a number is Prime or not. Which one would you say is better for a technical interview? Jul 11, 2025 · Examples: Input: N = 6 Output: 9 Explanation: 9 is a greater number than 6 and is also a perfect square Input: N = 9 Output: 16 Approach: Find the square root of given N. pow () method We can use the logic √number = number½ to find the square root of a number. Example 1: Input: num = 16 Output: true A perfect square is an integer that is the square of an integer; in other words, it is the product of some integer with itself. sqrt() function, using custom function and also without using any function with proper code examples. 5) in c++ or x ** 0. if a number has a squareroot that is a whole number it should return true. sqrt (num) and a print method to list the numbers. Using User-Defined Logic One way to check if a number is a perfect square is by using a loop to iterate from 1 to the given number and checking if the square of In Java, to find the square root of a number is very easy if we are using the pre-defined method. Perfect Square number in Java. Jul 23, 2025 · a2 ≤ N ≤ b2 Taking the square root of the equation, considering both a and b as positive numbers, we get: a ≤ sqrt (N) ≤ b So, according to the above relation, it can be concluded that one of the factors of a non-prime number will definitely be less than or equal to sqrt (N). Sep 27, 2024 · Learn how to do square root in Java using the powerful Math. Learn how to find square root in Java using Math. Valid Perfect Square Description Given a positive integer num, return true if num is a perfect square or false otherwise. 122222. In other words, it is the product of some integer with itself. Jul 23, 2025 · Given a non-negative number find the cube root of a number using the binary search approach. 1. Example 1: Input: num = 16 Output: true Finding Perfect Square Numbers in a Range Using Java The following Java program finds all perfect square numbers between two given numbers. So one possible solution we could implement is, check square of each number starting from 1 and check whether it matches input num, if it matches we can return true, otherwise continue until we find the square of a The program avoids unnecessary iterations beyond the square root, significantly reducing computation time. Aug 9, 2021 · In this tutorial, we will write a java program to check whether a given number is Sunny number or not. I was finding out the algorithm for finding out the square root without using sqrt function and then tried to put into programming. 5 * (X + (N / X)) where X is any guess which can be assumed to be N or 1. In fact, it's one of the tricky Sep 1, 2024 · This Java program demonstrates how to check if a given number is a perfect square. Jul 11, 2025 · Below is the implementation: The given program checks if a number is a perfect square without finding the square root. Mar 4, 2013 · Math. Mar 13, 2025 · # Python program to check if a number is a perfect square import math # Function to check perfect square def is_perfect_square (num): if num < 0: return False # Negative numbers cannot be perfect squares sqrt = math. Better than official and forum solutions. For instance, given the input 16, the output would affirm that 16 is a perfect square because 4 * 4 equals 16. , floor (√N). 872983346207417 returns False, whereas math. NOTE: Do not use the sqrt function from the standard library. sqrt(x) or using x**0. As we know, the sqrt function returns a double value. Example 1: Input: num = 16 Output: true Explanation: We return true because 4 * Nov 14, 2024 · Learn about sqrt () in C with syntax, parameter, return value and exceptions. Jul 11, 2025 · In this article, we will learn how to write a prime number program in Java when the input given is a Positive number. sqrt function that returns the square root of any given number. We will learn two ways, by using Math. Dec 6, 2022 · Given a non-negative integer N, the task is to find the square root of N using bitwise operations. Use the is_integer() method to verify if the square root is a whole number. Enhance your coding skills as you discover an efficient way to determine if a number's square root is an integer, making it a perfect square. Then, we check if the result is equal to the integer we Aug 30, 2019 · I'm working on making a method that will calculate the square root of a supplied integer without using Math. We can use it to find the square root of a number. Understand square root in c with implications and uses of sqrt () function in c. sqrt (). As of right now perfect squares will work however non perfect squares seem to loop infinitely. Square Root of 125 is 5 √ 5 5√5 5√5 Square of 125 is 15,625 What Is the Square Root of 125? The square root is an inverse mathematical operation of a square. Oct 30, 2023 · Given an integer N and a tolerance level L, the task is to find the square root of that number using Newton's Method. Feb 27, 2025 · Learn how to find the square root of a number in Java without using the sqrt() method. The Coding. sqrt () and custom logic. For solving this problem, we don’t have to use any built-in library function (such as sqrt). Dec 25, 2019 · Write a JAVA program to check whether a given number is a perfect square number or not. If you know any other solution of this interview problem then feel free to suggest in comments. The square root of a number x is a value y such that y2 = x. Check if a Number is Perfect Square Using Square Root function (sqrt) As the name itself Oct 12, 2023 · This tutorial demonstrates the use of sqrt() method using different code examples and educates about other techniques to find the square root of a number without using sqrt() method. In-depth solution and explanation for LeetCode 367. If i * i = n, then print i as n is a perfect square whose square root is i. We will cover various approaches such as using loops, square root optimization, & recursive techniques. Dec 13, 2024 · The function is_perfect_square (number) is defined to determine if a given number is a perfect square. Using Square root to Check P erfect Number in Java An Efficient Solution is to go through numbers till the square root of n. e. Initialize start = 0 and end = number. We would like to show you a description here but the site won’t allow us. Math. Efficient approach: This method is based on the fact that the very first perfect square after number L will definitely be the square of ?sqrt (L)?. You must not use any built-in library function, such as sqrt. 5 casts to 3. Includes code examples, best practices, time complexity, and method variations. Mar 19, 2024 · In Java, the sqrt () method is specifically used to find the square root of a number, however, the pow () method can be used to calculate the square root or power of any given number. Mar 30, 2019 · However, teachers at universities don't like to let the things easy for students, that's why in programming classes you may need to find a way to find the square root of a number without using this library in C ! As homeworks or tasks aren't optional, we'll show you how you can easily achieve this goal without using the sqrt function in C. A perfect square is any whole number that can be expressed as the product of an integer with itself, like 4 (2 x 2), 9 (3 x 3), etc. In this video I will be writing a java program to calculate the square root of any number without using the math. its square root is another integer): I've done it the easy way, by using the built-in Math. sqrt (12) is 3. There are the approaches to calculate the square root of the given number, these are: /* * * Given a positive integer num, write a function which returns True if num is a perfect square else False. Input: N = 19 Output: 4 Explanation: The square root of 19 lies in between 4 and 5 so Jul 1, 2025 · Write a program to calculate the square root of a number in Java or C++ is one of the popular coding interview questions from Programming job interviews both on tech companies like Facebook, Amazon, and investment banks like Citibank and Bank Of America, etc. 4. Use boolean equal operator to verify if the product of square root is equal to the number given. sqrt() function, b Oct 30, 2024 · Explore this concise java program designed to check whether a given number is a perfect square. Can you solve this real interview question? Valid Perfect Square - Given a positive integer num, return true if num is a perfect square or false otherwise. Return the result Return True if the square root is an integer, and False otherwise. Additionally, it prevents adding the square root divisor twice if the number is a perfect square. 🤷‍♂️ (At least thats what Id do, but I only learn things as a hobby so I probably dont know what Im talking about) May 19, 2011 · Actually, here is the better answer: int number = 13; int iRoot = static_cast<int>(sqrt(static_cast<float>(number)) + . Hello viewers, in this video I will show you how to check a number is a perfect square or not using java programs. ceil with examples for each. krij uvl wkso bmzgvm ybbj ekpe ogun eytm rlchg fnvf