Can you solve this real interview question? Sum of Square Numbers - Given a non-negative integer c, decide whether there're two integers a and b such that a2 + b2 = c. Example 1: Input: c = 5 Output: true Explanation: 1 * 1 + 2 * 2 = 5 Example 2:
Java 代码如下: public boolean judgeSquareSum(int c) { int left = 0; int right = (int) Math.sqrt(c); while(left <= right){ int sum = left * left + right * right; if(sum < c) left++; else if(sum > c) right--; else { return true; } } return false; } 算法复杂度为: ...
https://leetcode.com/problems/sum-of-square-numbers/discuss/104932/hashset-java-quick-solution-one-for-loop LeetCode All in One 题目讲解汇总(持续更新中...)
如果在c的平方根范围内,存在两数平方和等于c,那么先将单个数的平方值a添加进set中,然后再去判断set中是否存在c减去a的另一个值b,如果存在就返回true。 publicbooleanjudgeSquareSum(intc){ HashSet<Integer> set =newHashSet<>();intnum = (int)Math.sqrt(c);for(inti=num; i >=0; i--) { set.a...
Input: 3 Output: False 1. 2. 题意:给定一个非负数 ,计算是否存在整数 和 ,使得 ; 解法一(超时):最简单的办法就是使用暴力求解, 和 的取值区间在 ;最终肯定会超时的; Java class Solution { public boolean judgeSquareSum(int c) { for (long a = 0; a * a <= c; a++) { ...
633. Sum of Square Numbers ...【java】633. Sum of Square Numbers 问题原文https://leetcode-cn.com/problems/sum-of-square-numbers/description/ 解决这道题的过程中,了解到完全平方数的一个性质,在这里记录一下 有关问题代码如下,时间复杂度为lgn ......
Input:5Output:TrueExplanation:1*1+2*2=5 1. 2. 3. Example 2: Input:3Output:False 1. 2. 方法一:两遍for循环, 复杂度o(n2), 会time limit 报错 public boolean judgeSquareSum(int c) { for(int i=0;i<=c;i++) { for(int j=0;j<=c;j++) { ...
LeetCode371. Sum of Two Integers 两个整数相加,不使用+ -法 先贴上代码,代码是别人的,为了帮助理解,这里给出解释,如果有什么错误希望纠正和海涵。...【LeetCode】1022. Sum of Root To Leaf Binary Numbers 解题报告(Python) 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ ...
Sum of Square Numbers 2. Solution 代码语言:javascript 代码运行次数:0 运行 classSolution{public:booljudgeSquareSum(int c){int root=int(sqrt(c))+1;for(int i=0;i<root;i++){int difference=c-i*i;int j=int(sqrt(difference));if(i*i+j*j==c){returntrue;}}returnfalse;}};...
http://www.lintcode.com/zh-cn/problem/check-sum-of-square-numbers/?rand=true...LeetCode : Sum of Square Numbers 试题: Given a non-negative integer c, your task is to decide whether there’re two integers a and b such that a2 + b2 = c. Example 1: Input: 5 Output: True Explan...