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题解 | 井字棋

import java.util.*; public class Board { public boolean checkWon(int[][] board) { boolean won = false; for (int i = 0; i < boa...

2025-09-27

0 22

题解 | 无缓存交换

import java.util.*; public class Exchange { public int[] exchangeAB(int[] AB) { AB[0] ^= AB[1]; AB[1] ^= AB[0]; AB...

2025-09-26

0 18

题解 | 最近公共祖先

import java.util.*; public class LCA { public int getLCA(int a, int b) { if (a == b) { return a; } else { ...

2025-09-26

0 17

题解 | 判断直线相交

import java.util.*; public class CrossLine { public boolean checkCrossLine(double s1, double s2, double y1, double y2) { if(( Math.abs(s...

2025-09-26

0 16

题解 | 碰撞的蚂蚁

import java.util.*; public class Ants { public double antsCollision(int n) { // write code here return 1- (double) 2 / (1 <<...

2025-09-26

0 15