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README.md
README.md
 
 
【Easy】001. A + B Problem.md
【Easy】001. A + B Problem.md
 
 
【Easy】041. Maximum Subarray.md
【Easy】041. Maximum Subarray.md
 
 
【Easy】044. Minimum Subarray.md
【Easy】044. Minimum Subarray.md
 
 
【Easy】138. Subarray Sum.md
【Easy】138. Subarray Sum.md
 
 
【Easy】141. Sqrt(x).md
【Easy】141. Sqrt(x).md
 
 
【Easy】415. Valid Palindrome.md
【Easy】415. Valid Palindrome.md
 
 
【Easy】548. Intersection of Two Arrays II.md
【Easy】548. Intersection of Two Arrays II.md
 
 
【Easy】627. Longest Palindrome.md
【Easy】627. Longest Palindrome.md
 
 
【Easy】662. Guess Number Game.md
【Easy】662. Guess Number Game.md
 
 
【Easy】916. Palindrome Permutation.md
【Easy】916. Palindrome Permutation.md
 
 
【Easy】920. Meeting Rooms.md
【Easy】920. Meeting Rooms.md
 
 
【Hard】249. Count of Smaller Number before itself.md
【Hard】249. Count of Smaller Number before itself.md
 
 
【Hard】360. Sliding Window Median.md
【Hard】360. Sliding Window Median.md
 
 
【Hard】621. Maximum Subarray V.md
【Hard】621. Maximum Subarray V.md
 
 
【Medium】042. Maximum Subarray II.md
【Medium】042. Maximum Subarray II.md
 
 
【Medium】045. Maximum Subarray Difference.md
【Medium】045. Maximum Subarray Difference.md
 
 
【Medium】139. Subarray Sum Closest.md
【Medium】139. Subarray Sum Closest.md
 
 
【Medium】191. Maximum Product Subarray.md
【Medium】191. Maximum Product Subarray.md
 
 
【Medium】200. Longest Palindromic Substring.md
【Medium】200. Longest Palindromic Substring.md
 
 
【Medium】201. Segment Tree Build.md
【Medium】201. Segment Tree Build.md
 
 
【Medium】202. Segment Tree Query.md
【Medium】202. Segment Tree Query.md
 
 
【Medium】203. Segment Tree Modify.md
【Medium】203. Segment Tree Modify.md
 
 
【Medium】205. Interval Minimum Number.md
【Medium】205. Interval Minimum Number.md
 
 
【Medium】206. Interval Sum.md
【Medium】206. Interval Sum.md
 
 
【Medium】247. Segment Tree Query II.md
【Medium】247. Segment Tree Query II.md
 
 
【Medium】248. Count of Smaller Number .md
【Medium】248. Count of Smaller Number .md
 
 
【Medium】402. Continuous Subarray Sum.md
【Medium】402. Continuous Subarray Sum.md
 
 
【Medium】414. Divide Two Integers.md
【Medium】414. Divide Two Integers.md
 
 
【Medium】428. Pow(x, n).md
【Medium】428. Pow(x, n).md
 
 
【Medium】460. Find K Closest Elements.md
【Medium】460. Find K Closest Elements.md
 
 
【Medium】586. Sqrt(x) II.md
【Medium】586. Sqrt(x) II.md
 
 
【Medium】617. Maximum Average Subarray II.md
【Medium】617. Maximum Average Subarray II.md
 
 
【Medium】620. Maximum Subarray IV.md
【Medium】620. Maximum Subarray IV.md
 
 
【Medium】633. Find the Duplicate Number.md
【Medium】633. Find the Duplicate Number.md
 
 
【Medium】751. John's business.md
【Medium】751. John's business.md
 
 
【Medium】824. Single Number IV.md
【Medium】824. Single Number IV.md
 
 
【Medium】891. Valid Palindrome II.md
【Medium】891. Valid Palindrome II.md
 
 
【Medium】919. Meeting Rooms II .md
【Medium】919. Meeting Rooms II .md
 
 

Repository files navigation

Content

Single Array 单数组

  • 找特殊元素

    a. 利用下标（链表找环）

633. Find the Duplicate Number

Sub Arrays 子数组

  • 单个不限定长度

    prefixSum

041. Maximum Subarray

044. Minimum Subarray

138. Subarray Sum

139. Subarray Sum Closest

191. Maximum Product Subarray

402. Continuous Subarray Sum

  • 单个限定长度

617. Maximum Average Subarray II

620. Maximum Subarray IV

621. Maximum Subarray V

  • 多个不相交

    扫描分割线

042. Maximum Subarray II

045. Maximum Subarray Difference

Two Arrays 双数组

  • 交集

548. Intersection of Two Arrays II

Interval 区间

  • Segment Tree 基础

    Segment Tree的创建、修改、查询

201. Segment Tree Build

202. Segment Tree Query

247. Segment Tree Query II

203. Segment Tree Modify

  • 区间求值

205. Interval Minimum Number

206. Interval Sum

751. John's business

  • 数字比较

248. Count of Smaller Number

249. Count of Smaller Number before itself

Binary Search 二分法

  • 值域二分

617. Maximum Average Subarray II

662. Guess Number Game

  • 索引二分

460. Find K Closest Elements

824. Single Number IV

Palindrom 回文串

  • 验证

     a. reverse
 b. 双指针

415. Valid Palindrome

891. Valid Palindrome II

916. Palindrome Permutation

  • 求最长

     a. 动态规划
 b. Manacher's Algoritgm
 c. KMP

200. Longest Palindromic Substring

627. Longest Palindrome

Mathmatic 数学运算

    a. bitwise
    b. 二分
  • 加法

1. A + B Problem

  • 开方

141. Sqrt(x)

586. Sqrt(x) II

  • 除法

414. Divide Two Integers

  • 次方

428. Pow(x, n)

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