摘要：
Given a collection of intervals, merge all overlapping intervals. Example 1: Example 2: 题意 合并重合的闭区间 题解 1 bool operator <(const Interval& a, const Inte 阅读全文
摘要：
Given an array of non-negative integers, you are initially positioned at the first index of the array. Each element in the array represents your maxim 阅读全文
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Given a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spiral order. Example 1: Example 2: 题意 顺时针螺旋输出数组 题解 1 class 阅读全文
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Given an integer array nums, find the contiguous subarray (containing at least one number) which has the largest sum and return its sum. Example: Foll 阅读全文
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The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack each other. Given an integer n, return the 阅读全文
摘要：
The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack each other. Given an integer n, return all 阅读全文