Try to make your program as efficient as possible. In particular, it is much more efficient to start with the largest possible perfect square and work down (as illustrated in the example above) than it is to start with the smallest possible perfect square and work up. To make your job ...
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...
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...
public boolean isPerfectSquare(int num) { for(int i = 1; num > 0; i += 2){ num -= i; } return num == 0; } } 1. 2. 3. 4. 5. 6. 7. 8. python版本: class Solution(object): def isPerfectSquare(self, num): """ :type num: int :rtype: bool """ i = 1 while n...
Program to check if given number is perfect square in Kotlin packagecom.includehelpimport java.util.*//import kotlin.math.floor//import kotlin.math.sqrt//function to check perfect Square numberfuncheckPerfectSquare(number:Double):Boolean{//Square Root of Numbervalsq= Math.sqrt(number)//Floor va...
if (goodMask << x >= 0) return false; final int numberOfTrailingZeros = Long.numberOfTrailingZeros(x); // Each square ends with an even number of zeros. if ((numberOfTrailingZeros & 1) != 0) return false; x >>= numberOfTrailingZeros; // Now x is either 0 or odd. // In ...
Problem Given a positive integer num, write a function which returns True if num is a perfect square else False. Example For example: Given num = 16 ReturnsTrue Solution class Solution { public boolean isPerfectSquare(int num) { if (num == 1) return true; ...
how to do Matrix square root mathematica pearson prentice hall algebra 2 teacher edition algebra pretests program to solve improper integrals setting precision for decimal numbers in java exercises of The greatest common divisor (gcd) free dividing fractions for beginners worksheet multiplying...
Etudes for Programmers I got the idea for the"etudes"part of the name from this1978 bookbyCharles Wetherellthat was very influential to me when I was first learning to program. I still have my copy.
Perfect Square: A perfect square is defined as a number which can be expressed as the product of two same integer values. For example: 16 is a perfect square number since it can be written as {eq}4 \times 4 {/eq}. An even integer can be expressed in the for...