766. Toeplitz Matrix

Description

Given an m x n matrix, returntrueif the matrix is Toeplitz. Otherwise, return false.

348. Design Tic-Tac-Toe

Description

Assume the following rules are for the tic-tac-toe game on an n x n board between two players:

282. Expression Add Operators

Description

Given a string num that contains only digits and an integer target, return all possibilities to insert the binary operators '+', '-', and/or '*' between the digits of num so that the resultant expression evaluates to the target value.

278. First Bad Version

Description

You are a product manager and currently leading a team to develop a new product. Unfortunately, the latest version of your product fails the quality check. Since each version is developed based on the previous version, all the versions after a bad version are also bad.

1216. Valid Palindrome III

Description

Given a string s and an integer k, return true if s is a k-palindrome .

1091. Shortest Path in Binary Matrix

Description

Given an n x n binary matrix grid, return the length of the shortest clear path in the matrix. If there is no clear path, return -1.

118. Pascal’s Triangle

Description

Given an integer numRows, return the first numRows of Pascal’s triangle.

75. Sort Colors

Description

Given an array nums with n objects colored red, white, or blue, sort them in-place so that objects of the same color are adjacent, with the colors in the order red, white, and blue.

71. Simplify Path

Description

You are given an absolute path for a Unix-style file system, which always begins with a slash '/'. Your task is to transform this absolute path into its simplified canonical path .

65. Valid Number

Description

Given a string s, return whether s is a valid number.