lettuan

2017年1月7日

摘要： Given an array with n objects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the order red, 阅读全文

posted @ 2017-01-07 08:13 lettuan 阅读(116) 评论(0) 推荐(0) 编辑

Leetcode 45. Jump Game II

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

posted @ 2017-01-07 00:00 lettuan 阅读(173) 评论(0) 推荐(0) 编辑

2017年1月6日

Leetcode 55. Jump Game

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

posted @ 2017-01-06 14:40 lettuan 阅读(102) 评论(0) 推荐(0) 编辑

Leetcode 18. 4Sum

摘要： Given an array S of n integers, are there elements a, b, c, and d in S such that a + b + c + d = target? Find all unique quadruplets in the array whic 阅读全文

posted @ 2017-01-06 10:30 lettuan 阅读(120) 评论(0) 推荐(0) 编辑

Leetcode 259. 3Sum Smaller

摘要： Given an array of n integers nums and a target, find the number of index triplets i, j, k with 0 <= i < j < k < n that satisfy the condition nums[i] + 阅读全文

posted @ 2017-01-06 04:34 lettuan 阅读(178) 评论(0) 推荐(0) 编辑

Leetcode 16. 3Sum Closest

摘要： Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sum of the three integers. 阅读全文

posted @ 2017-01-06 04:04 lettuan 阅读(144) 评论(0) 推荐(0) 编辑

Leetcode 15. 3Sum

摘要： Given an array S of n integers, are there elements a, b, c in S such that a + b + c = 0? Find all unique triplets in the array which gives the sum of 阅读全文

posted @ 2017-01-06 03:57 lettuan 阅读(130) 评论(0) 推荐(0) 编辑

2017年1月5日

Leetcode 365. Water and Jug Problem

摘要：可以想象有一个无限大的水罐，如果我们有两个杯子x和y，那么原来的问题等价于是否可以通过往里面注入或倒出水从而剩下z。 z =? m*x + n*y 如果等式成立，那么z%gcd(x,y) == 0。阅读全文

posted @ 2017-01-05 14:00 lettuan 阅读(88) 评论(0) 推荐(0) 编辑

Leetcode 254. Factor Combinations

摘要： Numbers can be regarded as product of its factors. For example, Write a function that takes an integer n and return all possible combinations of its f 阅读全文

posted @ 2017-01-05 11:52 lettuan 阅读(182) 评论(0) 推荐(0) 编辑

Leetcode 377. Combination Sum IV

摘要： Given an integer array with all positive numbers and no duplicates, find the number of possible combinations that add up to a positive integer target. 阅读全文

posted @ 2017-01-05 05:13 lettuan 阅读(117) 评论(0) 推荐(0) 编辑

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