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update: 添加问题"3577.统计计算机解锁顺序排列数"的代码和题解#1214

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update: 添加问题"3577.统计计算机解锁顺序排列数"的代码和题解#1214
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Copilot AI commented Dec 10, 2025

添加 LeetCode 问题 3577(统计计算机解锁顺序排列数)的完整解决方案,包括多语言实现和题解文档。

变更内容

  • 代码实现: 添加 C++, Python, Go, Java 四种语言的解决方案

    • 使用回溯算法遍历所有有效解锁路径
    • 实现跳过规则检查(例如:1→3 必须先经过 2)
    • 利用对称性优化计算(角点 ×4 + 边点 ×4 + 中心点 ×1)
  • 题解文档: 添加详细的算法说明和代码注释

    • 问题分析和解题思路
    • 时间复杂度和空间复杂度分析
    • 关键逻辑的中文注释

示例代码

class Solution {
private:
    int ans;
    bool visited[9];
    
    void dfs(int last, int restCnt) {
        if (!restCnt) {
            ans++;
            return;
        }
        for (int i = 0; i < 9; i++) {
            if (canMoveTo(last, i)) {
                visited[i] = true;
                dfs(i, restCnt - 1);
                visited[i] = false;
            }
        }
    }
    // ...
};

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Copilot AI changed the title [WIP] Update: 添加问题“3577.统计计算机解锁顺序排列数”的代码和题解 update: 添加问题"3577.统计计算机解锁顺序排列数"的代码和题解 Dec 10, 2025
Copilot AI requested a review from LetMeFly666 December 10, 2025 15:24
@LetMeFly666
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Seems that It's nothing here

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Nothing

@LetMeFly666
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fine, see #1215 #1216

@LetMeFly666 LetMeFly666 deleted the copilot/sub-pr-1213 branch December 10, 2025 15:37
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