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feat: Traditional Chinese version (#1163)
* First commit * Update mkdocs.yml * Translate all the docs to traditional Chinese * Translate the code files. * Translate the docker file * Fix mkdocs.yml * Translate all the figures from SC to TC * 二叉搜尋樹 -> 二元搜尋樹 * Update terminology. * Update terminology * 构造函数/构造方法 -> 建構子 异或 -> 互斥或 * 擴充套件 -> 擴展 * constant - 常量 - 常數 * 類 -> 類別 * AVL -> AVL 樹 * 數組 -> 陣列 * 係統 -> 系統 斐波那契數列 -> 費波那契數列 運算元量 -> 運算量 引數 -> 參數 * 聯絡 -> 關聯 * 麵試 -> 面試 * 面向物件 -> 物件導向 歸併排序 -> 合併排序 范式 -> 範式 * Fix 算法 -> 演算法 * 錶示 -> 表示 反碼 -> 一補數 補碼 -> 二補數 列列尾部 -> 佇列尾部 區域性性 -> 區域性 一摞 -> 一疊 * Synchronize with main branch * 賬號 -> 帳號 推匯 -> 推導 * Sync with main branch * First commit * Update mkdocs.yml * Translate all the docs to traditional Chinese * Translate the code files. * Translate the docker file * Fix mkdocs.yml * Translate all the figures from SC to TC * 二叉搜尋樹 -> 二元搜尋樹 * Update terminology * 构造函数/构造方法 -> 建構子 异或 -> 互斥或 * 擴充套件 -> 擴展 * constant - 常量 - 常數 * 類 -> 類別 * AVL -> AVL 樹 * 數組 -> 陣列 * 係統 -> 系統 斐波那契數列 -> 費波那契數列 運算元量 -> 運算量 引數 -> 參數 * 聯絡 -> 關聯 * 麵試 -> 面試 * 面向物件 -> 物件導向 歸併排序 -> 合併排序 范式 -> 範式 * Fix 算法 -> 演算法 * 錶示 -> 表示 反碼 -> 一補數 補碼 -> 二補數 列列尾部 -> 佇列尾部 區域性性 -> 區域性 一摞 -> 一疊 * Synchronize with main branch * 賬號 -> 帳號 推匯 -> 推導 * Sync with main branch * Update terminology.md * 操作数量(num. of operations)-> 操作數量 * 字首和->前綴和 * Update figures * 歸 -> 迴 記憶體洩漏 -> 記憶體流失 * Fix the bug of the file filter * 支援 -> 支持 Add zh-Hant/README.md * Add the zh-Hant chapter covers. Bug fixes. * 外掛 -> 擴充功能 * Add the landing page for zh-Hant version * Unify the font of the chapter covers for the zh, en, and zh-Hant version * Move zh-Hant/ to zh-hant/ * Translate terminology.md to traditional Chinese
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"""
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File: min_path_sum.py
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Created Time: 2023-07-04
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Author: krahets (krahets@163.com)
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"""
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from math import inf
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def min_path_sum_dfs(grid: list[list[int]], i: int, j: int) -> int:
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"""最小路徑和:暴力搜尋"""
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# 若為左上角單元格,則終止搜尋
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if i == 0 and j == 0:
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return grid[0][0]
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# 若行列索引越界,則返回 +∞ 代價
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if i < 0 or j < 0:
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return inf
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# 計算從左上角到 (i-1, j) 和 (i, j-1) 的最小路徑代價
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up = min_path_sum_dfs(grid, i - 1, j)
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left = min_path_sum_dfs(grid, i, j - 1)
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# 返回從左上角到 (i, j) 的最小路徑代價
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return min(left, up) + grid[i][j]
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def min_path_sum_dfs_mem(
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grid: list[list[int]], mem: list[list[int]], i: int, j: int
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) -> int:
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"""最小路徑和:記憶化搜尋"""
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# 若為左上角單元格,則終止搜尋
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if i == 0 and j == 0:
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return grid[0][0]
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# 若行列索引越界,則返回 +∞ 代價
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if i < 0 or j < 0:
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return inf
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# 若已有記錄,則直接返回
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if mem[i][j] != -1:
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return mem[i][j]
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# 左邊和上邊單元格的最小路徑代價
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up = min_path_sum_dfs_mem(grid, mem, i - 1, j)
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left = min_path_sum_dfs_mem(grid, mem, i, j - 1)
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# 記錄並返回左上角到 (i, j) 的最小路徑代價
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mem[i][j] = min(left, up) + grid[i][j]
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return mem[i][j]
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def min_path_sum_dp(grid: list[list[int]]) -> int:
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"""最小路徑和:動態規劃"""
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n, m = len(grid), len(grid[0])
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# 初始化 dp 表
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dp = [[0] * m for _ in range(n)]
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dp[0][0] = grid[0][0]
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# 狀態轉移:首行
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for j in range(1, m):
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dp[0][j] = dp[0][j - 1] + grid[0][j]
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# 狀態轉移:首列
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for i in range(1, n):
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dp[i][0] = dp[i - 1][0] + grid[i][0]
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# 狀態轉移:其餘行和列
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for i in range(1, n):
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for j in range(1, m):
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dp[i][j] = min(dp[i][j - 1], dp[i - 1][j]) + grid[i][j]
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return dp[n - 1][m - 1]
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def min_path_sum_dp_comp(grid: list[list[int]]) -> int:
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"""最小路徑和:空間最佳化後的動態規劃"""
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n, m = len(grid), len(grid[0])
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# 初始化 dp 表
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dp = [0] * m
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# 狀態轉移:首行
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dp[0] = grid[0][0]
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for j in range(1, m):
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dp[j] = dp[j - 1] + grid[0][j]
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# 狀態轉移:其餘行
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for i in range(1, n):
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# 狀態轉移:首列
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dp[0] = dp[0] + grid[i][0]
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# 狀態轉移:其餘列
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for j in range(1, m):
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dp[j] = min(dp[j - 1], dp[j]) + grid[i][j]
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return dp[m - 1]
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"""Driver Code"""
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if __name__ == "__main__":
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grid = [[1, 3, 1, 5], [2, 2, 4, 2], [5, 3, 2, 1], [4, 3, 5, 2]]
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n, m = len(grid), len(grid[0])
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# 暴力搜尋
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res = min_path_sum_dfs(grid, n - 1, m - 1)
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print(f"從左上角到右下角的做小路徑和為 {res}")
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# 記憶化搜尋
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mem = [[-1] * m for _ in range(n)]
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res = min_path_sum_dfs_mem(grid, mem, n - 1, m - 1)
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print(f"從左上角到右下角的做小路徑和為 {res}")
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# 動態規劃
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res = min_path_sum_dp(grid)
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print(f"從左上角到右下角的做小路徑和為 {res}")
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# 空間最佳化後的動態規劃
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res = min_path_sum_dp_comp(grid)
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print(f"從左上角到右下角的做小路徑和為 {res}")
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