原创 205. Isomorphic Strings [easy] (Python)

題目鏈接 https://leetcode.com/problems/isomorphic-strings/ 題目原文 Given two strings s and t, determine if they are isomo

2020-06-21 19:13:59

原创 190. Reverse Bits [easy] (Python)

題目鏈接 https://leetcode.com/problems/reverse-bits/ 題目原文 Reverse bits of a given 32 bits unsigned integer. For exampl

2020-06-21 19:13:58 23

原创 203. Remove Linked List Elements [easy] (Python)

題目鏈接 https://leetcode.com/problems/remove-linked-list-elements/ 題目原文 Remove all elements from a linked list of int

2020-06-21 19:13:58 2

原创 19. Remove Nth Node From End of List [easy] (Python)

題目鏈接 https://leetcode.com/problems/remove-nth-node-from-end-of-list/ 題目原文 Given a linked list, remove the nth node

2020-06-21 19:13:58

原创 38. Count and Say [easy] (Python)

題目鏈接 https://leetcode.com/problems/count-and-say/ 題目原文 The count-and-say sequence is the sequence of integers begi

2020-06-21 19:13:58

原创 67. Add Binary [easy] (Python)

題目鏈接 https://leetcode.com/problems/add-binary/ 題目原文 Given two binary strings, return their sum (also a binary stri

2020-06-21 19:13:58

原创 290. Word Pattern [easy] (Python)

題目鏈接 https://leetcode.com/problems/word-pattern/ 題目原文 Given a pattern and a string str, find if str follows the sa

2020-06-21 19:13:58

原创 58. Length of Last Word [easy] (Python)

題目鏈接 https://leetcode.com/problems/length-of-last-word/ 題目原文 Given a string s consists of upper/lower-case alphabe

2020-06-21 19:13:58

原创 28. Implement strStr() [easy] (Python)

題目鏈接 https://leetcode.com/problems/implement-strstr/ 題目原文 Implement strStr(). Returns the index of the first occur

2020-06-21 19:13:58

原创 112. Path Sum [easy] (Python)

題目鏈接 https://leetcode.com/problems/path-sum/ 題目原文 Given a binary tree and a sum, determine if the tree has a root-

2020-02-21 18:32:37

原创 225. Implement Stack using Queues [easy] (Python)

題目鏈接 https://leetcode.com/problems/implement-stack-using-queues/ 題目原文 Implement the following operations of a stac

2020-02-21 18:32:37

原创 257. Binary Tree Paths [easy] (Python)

題目鏈接 https://leetcode.com/problems/binary-tree-paths/ 題目原文 Given a binary tree, return all root-to-leaf paths. For

2020-02-21 18:32:34

原创 36. Valid Sudoku [easy] (Python)

題目鏈接 https://leetcode.com/problems/valid-sudoku/ 題目原文 Determine if a Sudoku is valid, according to: Sudoku Puzzles

2020-02-21 18:32:34

原创 14. Longest Common Prefix [easy] (Python)

題目鏈接 https://leetcode.com/problems/longest-common-prefix/ 題目原文 Write a function to find the longest common prefix

2020-02-21 18:32:34

原创 223. Rectangle Area [easy] (Python)

題目鏈接 https://leetcode.com/problems/rectangle-area/ 題目原文 Find the total area covered by two rectilinear rectangles

2020-02-21 18:32:34