转载自豆瓣： http://www.douban.com/note/330562764/

的确需要有一个分类列表在指导自己在准备时间不够充分的情况下接触到更多考点的题

利用堆栈：

• http://oj.leetcode.com/problems/evaluate-reverse-polish-notation/
• http://oj.leetcode.com/problems/longest-valid-parentheses/（也可以用一维数组，贪心）
• http://oj.leetcode.com/problems/valid-parentheses/
• http://oj.leetcode.com/problems/largest-rectangle-in-histogram/
• 特别注意细节：http://oj.leetcode.com/problems/trapping-rain-water/

多种数据结构：

• http://oj.leetcode.com/problems/lru-cache/
• http://oj.leetcode.com/problems/substring-with-concatenation-of-all-words/ (注意遍历方法）
• HASH：http://oj.leetcode.com/problems/longest-consecutive-sequence/

简单编程：

• http://oj.leetcode.com/problems/longest-common-prefix/
• http://oj.leetcode.com/problems/string-to-integer-atoi/ (分析，控制语句）

排序 & 查找：

• 二分查找：http://oj.leetcode.com/problems/search-a-2d-matrix/
• 二分查找进阶：http://oj.leetcode.com/problems/search-for-a-range/
• 二分查找应用：http://oj.leetcode.com/problems/sqrtx/
• 二分查找应用：http://oj.leetcode.com/problems/search-insert-position/
• 二分查找变种：http://oj.leetcode.com/problems/search-in-rotated-sorted-array/
• 二分查找变种：http://oj.leetcode.com/problems/search-in-rotated-sorted-array-- ii/

简单数学：

• http://oj.leetcode.com/problems/pascals-triangle/
• http://oj.leetcode.com/problems/pascals-triangle-ii/
• http://oj.leetcode.com/problems/powx-n/
• http://oj.leetcode.com/problems/reverse-integer/
• http://oj.leetcode.com/problems/plus-one/
• http://oj.leetcode.com/problems/unique-paths/
• http://oj.leetcode.com/problems/palindrome-number/
• http://oj.leetcode.com/problems/permutation-sequence/
• http://oj.leetcode.com/problems/merge-intervals/
• http://oj.leetcode.com/problems/valid-number/
• http://oj.leetcode.com/problems/climbing-stairs/
• http://oj.leetcode.com/problems/roman-to-integer/
• http://oj.leetcode.com/problems/integer-to-roman/
• http://oj.leetcode.com/problems/divide-two-integers/
• 区间：http://oj.leetcode.com/problems/insert-interval/

大数的数学运算：

• http://oj.leetcode.com/problems/add-binary/
• http://oj.leetcode.com/problems/add-two-numbers/

数组：

• http://oj.leetcode.com/problems/remove-element/
• http://oj.leetcode.com/problems/merge-sorted-array/
• http://oj.leetcode.com/problems/first-missing-positive/
• http://oj.leetcode.com/problems/spiral-matrix/
• http://oj.leetcode.com/problems/spiral-matrix-ii/
• http://oj.leetcode.com/problems/rotate-image/
• 遍历技巧：http://oj.leetcode.com/problems/Container-with-most-water/
• http://oj.leetcode.com/problems/two-sum/
• http://oj.leetcode.com/problems/3sum/
• http://oj.leetcode.com/problems/3sum-closest/
• http://oj.leetcode.com/problems/4sum/
• http://oj.leetcode.com/problems/set-matrix-zeroes/
• 用好标记数组：http://oj.leetcode.com/problems/valid-sudoku/
• http://oj.leetcode.com/problems/next-permutation/
• http://oj.leetcode.com/problems/word-search/
• http://oj.leetcode.com/problems/remove-duplicates-from-sorted-array/
• http://oj.leetcode.com/problems/remove-duplicates-from-sorted-array-ii/
• http://oj.leetcode.com/problems/sort-colors/

暴力方法/细节实现：

• http://oj.leetcode.com/problems/max-points-on-a-line/

链表：

• 归并排序：http://oj.leetcode.com/problems/sort-list/
• 插入排序：http://oj.leetcode.com/problems/insertion-sort-list/
• 反转、插入：http://oj.leetcode.com/problems/reorder-list/
• 检测是否有环：http://oj.leetcode.com/problems/linked-list-cycle/
• 确定链表环的起点：http://oj.leetcode.com/problems/linked-list-cycle-ii/
• Deep Copy 带有随机指针的链表：http://oj.leetcode.com/problems/copy-list-with-- random-pointer/
• 链表细节：http://oj.leetcode.com/problems/rotate-list/
• http://oj.leetcode.com/problems/remove-duplicates-from-sorted-list/
• 删除细节：http://oj.leetcode.com/problems/remove-duplicates-from-sorted-list-- ii/
• http://oj.leetcode.com/problems/partition-list/
• http://oj.leetcode.com/problems/swap-nodes-in-pairs/
• Merge 两个链表：http://oj.leetcode.com/problems/merge-two-sorted-lists/
• Merge 多链表：http://oj.leetcode.com/problems/merge-k-sorted-lists/
• 细节：http://oj.leetcode.com/problems/reverse-nodes-in-k-group/
• http://oj.leetcode.com/problems/remove-nth-node-from-end-of-list/
• http://oj.leetcode.com/problems/reverse-linked-list-ii/

二叉树遍历：递归 & 非递归

• http://oj.leetcode.com/problems/same-tree/
• 前序：http://oj.leetcode.com/problems/binary-tree-preorder-traversal/
• 中序：http://oj.leetcode.com/problems/binary-tree-inorder-traversal/
• 后序：http://oj.leetcode.com/problems/binary-tree-postorder-traversal/
• 遍历变种：http://oj.leetcode.com/problems/sum-root-to-leaf-numbers/
• 遍历变种：http://oj.leetcode.com/problems/path-sum/
• 遍历变种：http://oj.leetcode.com/problems/path-sum-ii/
• 遍历变种：http://oj.leetcode.com/problems/maximum-depth-of-binary-tree/
• 遍历变种：http://oj.leetcode.com/problems/minimum-depth-of-binary-tree/
• 重建二叉树：http://oj.leetcode.com/problems/construct-binary-tree-from-preorder- -and-inorder-traversal/
• 重建二叉树：http://oj.leetcode.com/problems/construct-binary-tree-from-inorder-- and-postorder-traversal/
• 层次遍历变种：http://oj.leetcode.com/problems/binary-tree-zigzag-level-order-- traversal/
• 遍历变种：http://oj.leetcode.com/problems/symmetric-tree/
• 遍历应用：http://oj.leetcode.com/problems/binary-tree-maximum-path-sum/
• 遍历应用：http://oj.leetcode.com/problems/balanced-binary-tree/
• 遍历应用：http://oj.leetcode.com/problems/recover-binary-search-tree/
• 遍历应用：http://oj.leetcode.com/problems/flatten-binary-tree-to-linked-list/
• level遍历：http://oj.leetcode.com/problems/binary-tree-level-order-traversal/
• level 遍历：http://oj.leetcode.com/problems/binary-tree-level-order-traversal-- ii/
• level 遍历变种：http://oj.leetcode.com/problems/populating-next-right-pointers-- in-each-node/
• level 遍历变种：http://oj.leetcode.com/problems/populating-next-right-pointers-- in-each-node-ii/

问题分析/智商/细节：

• http://oj.leetcode.com/problems/single-number/
• http://oj.leetcode.com/problems/single-number-ii/
• http://oj.leetcode.com/problems/candy/
• http://oj.leetcode.com/problems/gas-station/

动态规划：

• http://oj.leetcode.com/problems/triangle/ （最短路径）
• http://oj.leetcode.com/problems/subsets/ （另一种形式）
• http://oj.leetcode.com/problems/subsets-ii/
• http://oj.leetcode.com/problems/edit-distance/ （经典）
• http://oj.leetcode.com/problems/word-break/
• http://oj.leetcode.com/problems/word-break-ii/
• http://oj.leetcode.com/problems/unique-binary-search-trees/ （动态规划避免递归）
• http://oj.leetcode.com/problems/unique-paths-ii/
• http://oj.leetcode.com/problems/scramble-string/
• http://oj.leetcode.com/problems/palindrome-partitioning/
• http://oj.leetcode.com/problems/palindrome-partitioning-ii/
• http://oj.leetcode.com/problems/interleaving-string/
• http://oj.leetcode.com/problems/distinct-subsequences/
• http://oj.leetcode.com/problems/decode-ways/
• http://oj.leetcode.com/problems/gray-code/
• http://oj.leetcode.com/problems/minimum-path-sum/

回溯：

• http://oj.leetcode.com/problems/combinations/
• http://oj.leetcode.com/problems/generate-parentheses/
• http://oj.leetcode.com/problems/combination-sum/
• http://oj.leetcode.com/problems/combination-sum-ii/
• http://oj.leetcode.com/problems/sudoku-solver/
• 经典N皇后：http://oj.leetcode.com/problems/n-queens/
• http://oj.leetcode.com/problems/n-queens-ii/
• http://oj.leetcode.com/problems/letter-combinations-of-a-phone-number/

贪心：

• http://oj.leetcode.com/problems/best-time-to-buy-and-sell-stock/
• http://oj.leetcode.com/problems/jump-game/
• http://oj.leetcode.com/problems/jump-game-ii/
• http://oj.leetcode.com/problems/best-time-to-buy-and-sell-stock-ii/
• http://oj.leetcode.com/problems/best-time-to-buy-and-sell-stock-iii/
• http://oj.leetcode.com/problems/maximum-subarray/
• http://oj.leetcode.com/problems/minimum-window-substring/
• http://oj.leetcode.com/problems/maximal-rectangle/
• http://oj.leetcode.com/problems/longest-substring-without-repeating-characters/

分治 & 递归：

• http://oj.leetcode.com/problems/unique-binary-search-trees-ii/
• http://oj.leetcode.com/problems/restore-ip-addresses/ （时间复杂度有限，递归满足）
• http://oj.leetcode.com/problems/permutations/
• http://oj.leetcode.com/problems/permutations-ii/
• http://oj.leetcode.com/problems/convert-sorted-array-to-binary-search-tree/
• http://oj.leetcode.com/problems/convert-sorted-list-to-binary-search-tree/
• http://oj.leetcode.com/problems/median-of-two-sorted-arrays/
• http://oj.leetcode.com/problems/validate-binary-search-tree/

字符串：

• http://oj.leetcode.com/problems/count-and-say/
• http://oj.leetcode.com/problems/implement-strstr/ （子串查找）
• http://oj.leetcode.com/problems/anagrams/
• http://oj.leetcode.com/problems/text-justification/ (细节）
• http://oj.leetcode.com/problems/simplify-path/ （基础控制语句 if-else-for）
• http://oj.leetcode.com/problems/multiply-strings/
• http://oj.leetcode.com/problems/regular-expression-matching/
• http://oj.leetcode.com/problems/wildcard-matching/
• http://oj.leetcode.com/problems/longest-palindromic-substring/
• http://oj.leetcode.com/problems/zigzag-conversion/
• http://oj.leetcode.com/problems/length-of-last-word/
• http://oj.leetcode.com/problems/valid-palindrome/

图：

• 深搜/广搜：http://oj.leetcode.com/problems/clone-graph/

搜索 & 遍历：

• http://oj.leetcode.com/problems/word-ladder/
• http://oj.leetcode.com/problems/word-ladder-ii/
• 广搜：http://oj.leetcode.com/problems/surrounded-regions/