Given an m x n grid of characters board and a string word, return true if word exists in the grid. 79. 单词搜索 leetcode
A linked list of length n is given such that each node contains an additional random pointer, which could point to any node in the list, or null.Construct a deep copy of the list. 138. Copy List with Random Pointer leetcode
Given two strings text1 and text2, return common subsequence. If there is no common subsequence, return 0. 有更新！ 1143. Longest Common Subsequence dp
You want to schedule a list of jobs in d days. Jobs are dependent (i.e To work on the i-th job, you have to finish all the jobs j where 0 <= j < i). 有更新！ 1335. Minimum Difficulty of a Job Schedule leetcode
Given an m x n matrix. If an element is 0, set its entire row and column to 0. Do it in-place. 73. Set Matrix Zeroes leetcode
Return True if the path crosses itself at any point, that is, if at any time you are on a location you've previously visited. Return False otherwise. 1496. Path Crossing leetcode
Given a non-empty string s, you may delete at most one character. Judge whether you can make it a palindrome. 680. Valid Palindrome II leetcode
Given an absolute path for a file (Unix-style), simplify it. Or in other words, convert it to the canonical path. 有更新！ String - 71. Simplify Path leetcode
Given two binary strings, return their sum (also a binary string). 有更新！ String - 67. Add Binary leetcode
Implement pow(x, n), which calculates x raised to the power n (xn). 有更新！ Math - 50. Pow(x, n) leetcode
Given an input string (s) and a pattern (p), implement wildcard pattern matching with support for '?' and '*'. 有更新！ String - 44. Wildcard Matching leetcode
Write a program to solve a Sudoku puzzle by filling the empty cells. 有更新！ DFS&BFS - 37. Sudoku Solver dfs
Given a set of non-overlapping intervals, insert a new interval into the intervals (merge if necessary). 有更新！ Array - 57. Insert Interval leetcode
Given a n x n matrix where each of the rows and columns are sorted in ascending order, find the kth smallest element in the matrix. 有更新！ Binary Search - 378. Kth Smallest Element in a Sorted Matrix leetcode
Given a positive integer n, generate a square matrix filled with elements from 1 to n2 in spiral order. 有更新！ Array - 59. Spiral Matrix II leetcode
Given a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spiral order. 有更新！ Array - 54. Spiral Matrix leetcode
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