xinyu04

摘要： There are some spherical balloons taped onto a flat wall that represents the XY-plane. The balloons are represented as a 2D integer array points where 阅读全文

摘要： Given an array of positive integers arr, return the sum of all possible odd-length subarrays of arr. A subarray is a contiguous subsequence of the arr 阅读全文

摘要： Given a binary array data, return the minimum number of swaps required to group all 1’s present in the array together in any place in the array. Solut 阅读全文

摘要： Given an integer array nums and an integer k, return the maximum length of a subarray that sums to k. If there is not one, return 0 instead. Solution 阅读全文

摘要： A peak element in a 2D grid is an element that is strictly greater than all of its adjacent neighbors to the left, right, top, and bottom. Given a $0$ 阅读全文