3474. Lexicographically Smallest Generated String
3474. Lexicographically Smallest Generated String
Description
You are given two strings, str1 and str2, of lengths n and m, respectively.
41. First Missing Positive
694. Number of Distinct Islands
694. Number of Distinct Islands
Description
You are given an m x n binary matrix grid. An island is a group of 1‘s (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of the grid are surrounded by water.
1797. Design Authentication Manager
1797. Design Authentication Manager
Description
There is an authentication system that works with authentication tokens. For each session, the user will receive a new authentication token that will expire timeToLive seconds after the currentTime. If the token is renewed, the expiry time will be extended to expire timeToLive seconds after the (potentially different) currentTime.
1079. Letter Tile Possibilities
1079. Letter Tile Possibilities
Description
You have n``tiles, where each tile has one letter tiles[i] printed on it.
2592. Maximize Greatness of an Array
2592. Maximize Greatness of an Array
Description
You are given a 0-indexed integer array nums. You are allowed to permute nums into a new array perm of your choosing.
1353. Maximum Number of Events That Can Be Attended
1353. Maximum Number of Events That Can Be Attended
Description
You are given an array of events where events[i] = [startDay<sub>i</sub>, endDay<sub>i</sub>]. Every event i starts at startDay<sub>i</sub> and ends at endDay<sub>i</sub>.