话题分类 > 回溯
| # | 题目 | 标签 | 难度 |
|---|---|---|---|
| 2152 | Minimum Number of Lines to Cover Points 🔒 | [位运算] [几何] [数组] [哈希表] [数学] [动态规划] [回溯] [状态压缩] | Medium |
| 2151 | 基于陈述统计最多好人数 | [位运算] [数组] [回溯] [枚举] | Hard |
| 2065 | 最大化一张图中的路径价值 | [图] [数组] [回溯] | Hard |
| 2056 | 棋盘上有效移动组合的数目 | [数组] [字符串] [回溯] [模拟] | Hard |
| 2048 | 下一个更大的数值平衡数 | [数学] [回溯] [枚举] | Medium |
| 2044 | 统计按位或能得到最大值的子集数目 | [位运算] [数组] [回溯] | Medium |
| 2014 | 重复 K 次的最长子序列 | [贪心] [字符串] [回溯] [计数] [枚举] | Hard |
| 2002 | 两个回文子序列长度的最大乘积 | [位运算] [字符串] [动态规划] [回溯] [状态压缩] | Medium |
| 1986 | 完成任务的最少工作时间段 | [位运算] [数组] [动态规划] [回溯] [状态压缩] | Medium |
| 1980 | 找出不同的二进制字符串 | [数组] [字符串] [回溯] | Medium |
| 1947 | 最大兼容性评分和 | [位运算] [数组] [动态规划] [回溯] [状态压缩] | Medium |
| 1863 | 找出所有子集的异或总和再求和 | [位运算] [数组] [数学] [回溯] [组合数学] | Easy |
| 1849 | 将字符串拆分为递减的连续值 | [字符串] [回溯] | Medium |
| 1820 | 最多邀请的个数 🔒 | [数组] [回溯] [矩阵] | Medium |
| 1799 | N 次操作后的最大分数和 | [位运算] [数组] [数学] [动态规划] [回溯] [状态压缩] [数论] | Hard |
| 1774 | 最接近目标价格的甜点成本 | [数组] [动态规划] [回溯] | Medium |
| 1723 | 完成所有工作的最短时间 | [位运算] [数组] [动态规划] [回溯] [状态压缩] | Hard |
| 1718 | 构建字典序最大的可行序列 | [数组] [回溯] | Medium |
| 1655 | 分配重复整数 | [位运算] [数组] [动态规划] [回溯] [状态压缩] | Hard |
| 1601 | 最多可达成的换楼请求数目 | [位运算] [数组] [回溯] [枚举] | Hard |
| 1593 | 拆分字符串使唯一子字符串的数目最大 | [哈希表] [字符串] [回溯] | Medium |
| 1467 | 两个盒子中球的颜色数相同的概率 | [数学] [动态规划] [回溯] [组合数学] [概率与统计] | Hard |
| 1415 | 长度为 n 的开心字符串中字典序第 k 小的字符串 | [字符串] [回溯] | Medium |
| 1307 | 口算难题 | [数组] [数学] [字符串] [回溯] | Hard |
| 1286 | 字母组合迭代器 | [设计] [字符串] [回溯] [迭代器] | Medium |
| 1258 | 近义词句子 🔒 | [并查集] [数组] [哈希表] [字符串] [回溯] | Medium |
| 1255 | 得分最高的单词集合 | [位运算] [数组] [字符串] [动态规划] [回溯] [状态压缩] | Hard |
| 1240 | 铺瓷砖 | [动态规划] [回溯] | Hard |
| 1239 | 串联字符串的最大长度 | [位运算] [数组] [字符串] [回溯] | Medium |
| 1238 | 循环码排列 | [位运算] [数学] [回溯] | Medium |
| 1219 | 黄金矿工 | [数组] [回溯] [矩阵] | Medium |
| 1215 | 步进数 🔒 | [广度优先搜索] [回溯] | Medium |
| 1096 | 花括号展开 II | [栈] [广度优先搜索] [字符串] [回溯] | Hard |
| 1088 | 易混淆数 II 🔒 | [数学] [回溯] | Hard |
| 1087 | 花括号展开 🔒 | [广度优先搜索] [字符串] [回溯] | Medium |
| 1079 | 活字印刷 | [字符串] [回溯] | Medium |
| 1066 | 校园自行车分配 II 🔒 | [位运算] [数组] [动态规划] [回溯] [状态压缩] | Medium |
| 996 | 正方形数组的数目 | [位运算] [数组] [数学] [动态规划] [回溯] [状态压缩] | Hard |
| 980 | 不同路径 III | [位运算] [数组] [回溯] [矩阵] | Hard |
| 967 | 连续差相同的数字 | [广度优先搜索] [回溯] | Medium |
| 842 | 将数组拆分成斐波那契序列 | [字符串] [回溯] | Medium |
| 816 | 模糊坐标 | [字符串] [回溯] | Medium |
| 797 | 所有可能的路径 | [深度优先搜索] [广度优先搜索] [图] [回溯] | Medium |
| 784 | 字母大小写全排列 | [位运算] [字符串] [回溯] | Medium |
| 698 | 划分为k个相等的子集 | [位运算] [记忆化搜索] [数组] [动态规划] [回溯] [状态压缩] | Medium |
| 691 | 贴纸拼词 | [位运算] [动态规划] [回溯] [状态压缩] | Hard |
| 679 | 24 点游戏 | [数组] [数学] [回溯] | Hard |
| 638 | 大礼包 | [位运算] [记忆化搜索] [数组] [动态规划] [回溯] [状态压缩] | Medium |
| 526 | 优美的排列 | [位运算] [数组] [动态规划] [回溯] [状态压缩] | Medium |
| 494 | 目标和 | [数组] [动态规划] [回溯] | Medium |
| 491 | 递增子序列 | [位运算] [数组] [哈希表] [回溯] | Medium |
| 489 | 扫地机器人 🔒 | [回溯] [交互] | Hard |
| 473 | 火柴拼正方形 | [位运算] [数组] [动态规划] [回溯] [状态压缩] | Medium |
| 465 | 最优账单平衡 🔒 | [数组] [回溯] | Hard |
| 425 | 单词方块 🔒 | [字典树] [数组] [字符串] [回溯] | Hard |
| 411 | 最短独占单词缩写 🔒 | [位运算] [字符串] [回溯] | Hard |
| 401 | 二进制手表 | [位运算] [回溯] | Easy |
| 357 | 计算各个位数不同的数字个数 | [数学] [动态规划] [回溯] | Medium |
| 351 | 安卓系统手势解锁 🔒 | [动态规划] [回溯] | Medium |
| 320 | 列举单词的全部缩写 🔒 | [位运算] [字符串] [回溯] | Medium |
| 306 | 累加数 | [字符串] [回溯] | Medium |
| 301 | 删除无效的括号 | [广度优先搜索] [字符串] [回溯] | Hard |
| 294 | 翻转游戏 II 🔒 | [记忆化搜索] [数学] [动态规划] [回溯] [博弈] | Medium |
| 291 | 单词规律 II 🔒 | [哈希表] [字符串] [回溯] | Medium |
| 282 | 给表达式添加运算符 | [数学] [字符串] [回溯] | Hard |
| 267 | 回文排列 II 🔒 | [哈希表] [字符串] [回溯] | Medium |
| 257 | 二叉树的所有路径 | [树] [深度优先搜索] [字符串] [回溯] [二叉树] | Easy |
| 254 | 因子的组合 🔒 | [数组] [回溯] | Medium |
| 216 | 组合总和 III | [数组] [回溯] | Medium |
| 212 | 单词搜索 II | [字典树] [数组] [字符串] [回溯] [矩阵] | Hard |
| 140 | 单词拆分 II | [字典树] [记忆化搜索] [哈希表] [字符串] [动态规划] [回溯] | Hard |
| 131 | 分割回文串 | [字符串] [动态规划] [回溯] | Medium |
| 126 | 单词接龙 II | [广度优先搜索] [哈希表] [字符串] [回溯] | Hard |
| 113 | 路径总和 II | [树] [深度优先搜索] [回溯] [二叉树] | Medium |
| 95 | 不同的二叉搜索树 II | [树] [二叉搜索树] [动态规划] [回溯] [二叉树] | Medium |
| 93 | 复原 IP 地址 | [字符串] [回溯] | Medium |
| 90 | 子集 II | [位运算] [数组] [回溯] | Medium |
| 89 | 格雷编码 | [位运算] [数学] [回溯] | Medium |
| 79 | 单词搜索 | [数组] [回溯] [矩阵] | Medium |
| 78 | 子集 | [位运算] [数组] [回溯] | Medium |
| 77 | 组合 | [数组] [回溯] | Medium |
| 52 | N皇后 II | [回溯] | Hard |
| 51 | N 皇后 | [数组] [回溯] | Hard |
| 47 | 全排列 II | [数组] [回溯] | Medium |
| 46 | 全排列 | [数组] [回溯] | Medium |
| 40 | 组合总和 II | [数组] [回溯] | Medium |
| 39 | 组合总和 | [数组] [回溯] | Medium |
| 37 | 解数独 | [数组] [回溯] [矩阵] | Hard |
| 22 | 括号生成 | [字符串] [动态规划] [回溯] | Medium |
| 17 | 电话号码的字母组合 | [哈希表] [字符串] [回溯] | Medium |