In Java, checking whether a number is a perfect square or not is a common task. A number is called a perfect square if it can be expressed as the product of an integer with itself. For example, 16 is a perfect
本次解题使用的开发工具是eclipse,jdk使用的版本是1.8,环境是win7 64位系统,使用Java语言编写和测试。 02 第一种解法 暴力解法,定义一个long类型的变量,for循环判断其平方是否小于num,但是不要写循环体,这样省时,最后直接判断其平方是否等于num。 public boolean isPerfectSquare(intnum) {if(num<=1) {returnnum...
Java Example to check if a number is perfect square In this program, we have created auser-defined methodcheckPerfectSquare()that takes a number as an argument and returns true if the number is perfect square else it returns false. In the user defined method we are using two methods of t...
解法一: 1publicclassSolution {2publicbooleanisPerfectSquare(intnum) {3if(num < 0)returnfalse;4if(num == 1)returntrue;5for(inti = 1; i<= num/i;i++){6if(i*i == num)returntrue;7}8returnfalse;9}10} 解法2: 二分查找法 (java 没有ac 仅供参考) 1publicclassSolution {2publicboolean...
" + is_Perfect_Square(n)); } // Function to check if a given number is a perfect square public static boolean is_Perfect_Square(int n) { // Extract the last digit of the number int x = n % 10; // Check if the last digit is 2, 3, 7, or 8 (numbers whose squares end wit...
publicclassSolution{/** * @param n: a positive integer * @return: An integer */publicintnumSquares(intn) {// write your code hereint[] f = newint[n +1];for(inti =0; i <= n; i++) { f[i] = i;// max square number is i itself with all 1for(intj =1; j * j <= ...
Given a positive integer num, write a function which returns True if num is a perfect square else False. Note: Do not use any built-in library function such as sqrt. Example 1: Input: 16 Output: true 1. 2. Example 2: Input: 14 ...
Given a positive integern, find the least number of perfect square numbers (for example,1, 4, 9, 16, ...) which sum ton. Example 1: Input:n=12Output: 3 Explanation:12 = 4 + 4 + 4. 1. 1. Example 2: Input:n=13Output: 2 ...
A number x is said to be a perfect square if there exists an integer y such that x = y2. Input The first line contains a single integer n (1 ≤ n ≤ 1000) — the number of elements in the array. The second line contains n integers a1, a2, ..., an (...
GivenNaxis-aligned rectangles whereN>0,determineifthey all together form an exact coverofa rectangular region.Each rectangle is representedasa bottom-left point and a top-right point.For example,a unit square is representedas[1,1,2,2].(coordinateofbottom-left pointis(1,1)and top-right point...