LeetCode Problem
633. Sum of Square Numbers
Link to LeetCode
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:
Input: c = 3
Output: false
class Solution {
public boolean judgeSquareSum(int c) {
int cx = (int)Math.sqrt(c);
long i=0,j=cx;
while (i <= j) {
long temp = i*i + j*j;
if (temp==c) return true;
else if(temp< c)i++;
else j--;
}
return false;
}
}