wilderness

2017年3月12日

摘要： Follow up for "Unique Paths": Now consider if some obstacles are added to the grids. How many unique paths would there be? An obstacle and empty space 阅读全文

posted @ 2017-03-12 17:03 wilderness 阅读(200) 评论(0) 推荐(0)

[leetcode DP]62.Unique Paths

摘要：判断一个物体从左上角到右下角有多少种走法阅读全文

posted @ 2017-03-12 16:20 wilderness 阅读(116) 评论(0) 推荐(0)

[leetcode DP]53. Maximum Subarray

摘要： Find the contiguous subarray within an array (containing at least one number) which has the largest sum. For example, given the array [-2,1,-3,4,-1,2, 阅读全文

posted @ 2017-03-12 15:35 wilderness 阅读(167) 评论(0) 推荐(0)

2017年3月10日

[leetcode greedy]134. Gas Station

摘要： 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 cost 阅读全文

posted @ 2017-03-10 23:34 wilderness 阅读(178) 评论(0) 推荐(0)

[leetcode greedy]455. Assign Cookies

摘要： Assume you are an awesome parent and want to give your children some cookies. But, you should give each child at most one cookie. Each child i has a g 阅读全文

posted @ 2017-03-10 22:32 wilderness 阅读(135) 评论(0) 推荐(0)

[leetcode greedy]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 @ 2017-03-10 16:14 wilderness 阅读(154) 评论(0) 推荐(0)

[leetcode greedy]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 @ 2017-03-10 13:25 wilderness 阅读(228) 评论(0) 推荐(0)

2017年3月9日

[leetcode tree]107. Binary Tree Level Order Traversal II

摘要： Given a binary tree, return the bottom-up level order traversal of its nodes' values. (ie, from left to right, level by level from leaf to root). For 阅读全文

posted @ 2017-03-09 22:47 wilderness 阅读(134) 评论(0) 推荐(0)

[leetcode tree]104. Maximum Depth of Binary Tree

摘要：求树的最大深度 1 line python 阅读全文

posted @ 2017-03-09 11:57 wilderness 阅读(108) 评论(0) 推荐(0)

[leetcode tree]103. Binary Tree Zigzag Level Order Traversal

摘要： Given a binary tree, return the zigzag level order traversal of its nodes' values. (ie, from left to right, then right to left for the next level and 阅读全文

posted @ 2017-03-09 11:48 wilderness 阅读(117) 评论(0) 推荐(0)

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