LeetCode-

坚持每天刷一道算法题，冲鸭！！！

day1

• 验证回文字符串https://leetcode-cn.com/problems/valid-palindrome

day2

• 亲密字符串https://leetcode-cn.com/problems/buddy-strings
• 柠檬水找零https://leetcode-cn.com/problems/lemonade-change

day3

• 反转字符串中的单词https://leetcode-cn.com/problems/reverse-words-in-a-string-iii/

day4

• 三数之和https://leetcode-cn.com/problems/3sum/

day5

• 数组中的第k个最大元素https://leetcode-cn.com/problems/kth-largest-element-in-an-array/

day6

• 环形链表II https://leetcode-cn.com/problems/linked-list-cycle-ii/

day7

• 无重复字符的最长子串https://leetcode-cn.com/problems/longest-substring-without-repeating-characters/

day8

• 排序链表https://leetcode-cn.com/problems/sort-list/

day9

• 删除排序链表中的重复元素II https://leetcode-cn.com/problems/remove-duplicates-from-sorted-list-ii/

day10

• 复制带随机指针的链表https://leetcode-cn.com/problems/copy-list-with-random-pointer/

day11

• 平衡二叉树https://leetcode-cn.com/problems/balanced-binary-tree/

day12

• 翻转二叉树https://leetcode-cn.com/problems/invert-binary-tree/
• 树的子结构https://leetcode-cn.com/problems/shu-de-zi-jie-gou-lcof/

day13

• 从上到下打印二叉树https://leetcode-cn.com/problems/cong-shang-dao-xia-da-yin-er-cha-shu-lcof/
• 从上到下打印二叉树 III https://leetcode-cn.com/problems/cong-shang-dao-xia-da-yin-er-cha-shu-iii-lcof/

day14

• 路径总和II https://leetcode-cn.com/problems/path-sum-ii/
• 二叉树中的最大路径和https://leetcode-cn.com/problems/binary-tree-maximum-path-sum/

day15

• 验证二叉搜索树https://leetcode-cn.com/problems/validate-binary-search-tree/
• 二叉搜索树与双向链表https://leetcode-cn.com/problems/er-cha-sou-suo-shu-yu-shuang-xiang-lian-biao-lcof/

day16

• 二叉搜索树的第k大节点https://leetcode-cn.com/problems/er-cha-sou-suo-shu-de-di-kda-jie-dian-lcof/

day17 今天的主题为DFS

• 二叉树的最小深度https://leetcode-cn.com/problems/minimum-depth-of-binary-tree/
• 被围绕的区域https://leetcode-cn.com/problems/surrounded-regions/

day18 今天的主题为DFS

• 岛屿数量https://leetcode-cn.com/problems/number-of-islands/
• 扫雷游戏https://leetcode-cn.com/problems/minesweeper/

day19 今天的主题为BFS

• 被围绕的区域https://leetcode-cn.com/problems/surrounded-regions/
• 岛屿数量https://leetcode-cn.com/problems/number-of-islands/

day20 今天的主题为BFS

• 腐烂的橘子https://leetcode-cn.com/problems/rotting-oranges/

day21 今天的主题为BFS

• 二叉树的右视图https://leetcode-cn.com/problems/binary-tree-right-side-view/
• 路径总和https://leetcode-cn.com/problems/path-sum/

2020-3-26 今天的主题是链表和二叉树

• 打家劫舍 III https://leetcode-cn.com/problems/house-robber-iii/
• 对链表进行插入排序 https://leetcode-cn.com/problems/insertion-sort-list/

2020-4-2 今天的主题是贪心算法

• 分发饼干https://leetcode-cn.com/problems/assign-cookies/
• 加油站https://leetcode-cn.com/problems/gas-station/

2020-4-4 今天的主题是回溯算法

• 字母大小全排列https://leetcode-cn.com/problems/letter-case-permutation/
• 电话号码字母排列https://leetcode-cn.com/problems/letter-combinations-of-a-phone-number/

2020-4-5 今天的主题是回溯算法

• 无重复字符串的排列组合https://leetcode-cn.com/problems/permutation-i-lcci/
• 括号https://leetcode-cn.com/problems/bracket-lcci/

2020-4-6 今天的主题是动态规划

• 最大子序和https://leetcode-cn.com/problems/maximum-subarray/