热带雨林

摘要： 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 阅读全文

摘要： Given an unsorted array of integers nums, return the length of the longest continuous increasing subsequence (i.e. subarray). The subsequence must be  阅读全文

摘要： Given two integer arrays nums1 and nums2, return the maximum length of a subarray that appears in both arrays. Example 1: Input: nums1 = [1,2,3,2,1], 阅读全文

摘要： Given an array arr. You can choose a set of integers and remove all the occurrences of these integers in the array. Return the minimum size of the set 阅读全文

摘要： Given an integer n, your task is to count how many strings of length n can be formed under the following rules: Each character is a lower case vowel ( 阅读全文

摘要： Given an m x n matrix matrix and an integer k, return the max sum of a rectangle in the matrix such that its sum is no larger than k. It is guaranteed 阅读全文

摘要： Given a binary tree, collect a tree's nodes as if you were doing this: Collect and remove all leaves, repeat until the tree is empty. Example:Given bi 阅读全文

摘要： Given an array of characters chars, compress it using the following algorithm: Begin with an empty string s. For each group of consecutive repeating c 阅读全文

摘要： Description Given a string of char array and an offset, rotate the string by offset in place. (from left to right).In different languages, str will be 阅读全文

摘要： Given a set of n people (numbered 1, 2, ..., n), we would like to split everyone into two groups of any size. Each person may dislike some other peopl 阅读全文