摘要：【题目】 There are a number of spherical balloons spread in two-dimensional space. For each balloon, provided input is the start and end coordinates of th 阅读全文

摘要：【题目】 There are N gas stations along a circular route, where the amount of gas at station i is gas[i]. You have a car with an unlimited gas tank and it 阅读全文

摘要：【思路】 判断s是否为t的子串，所以length(s)<=length(t)。于是两个指针，一次循环。 将s、t转换为数组p1、p2。 i为过程中s的匹配长度。 i=0空串，单独讨论返回true。 当i=p1.length-1时返回true，否则循环结束返回false。 【代码】 【举例】 阅读全文

摘要：【题目】 A sequence of numbers is called a wiggle sequence if the differences between successive numbers strictly alternate between positive and negative. 阅读全文

摘要：【题目】 The i-th person has weight people[i], and each boat can carry a maximum weight of limit. Each boat carries at most 2 people at the same time, pro 阅读全文

摘要：【题目】 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 阅读全文