leetCode 平方数之和 java

/**
 * @author chengxy
 * @date 2018/6/28 9:29
 */
public class DemoTest0268 {
    public static void main(String[] args) {
        int c = 10000000;
        boolean b = judgeSquareSum(c);
        System.out.println(b);
    }
    public static boolean judgeSquareSum(int c) {
        int a = 0;
        int b = (int) Math.sqrt(c);
        while (a <= b) {
            if (a * a + b * b == c) {
                return true;
            } else if (a * a + b * b < c) {
                a++;
            } else {
                b--;
            }
        }
        return false;
    }
}