摘要：
You are given n pairs of numbers. In every pair, the first number is always smaller than the second number. Now, we define a pair (c, d) can follow an 阅读全文
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Given an unsorted array of integers, find the length of longest increasing subsequence. Example: Note: There may be more than one LIS combination, it 阅读全文
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Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adjacent numbers on the row below. For example, given the fo 阅读全文
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Given an integer array nums, find the contiguous subarray within an array (containing at least one number) which has the largest product. Example 1: E 阅读全文
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Given a 2D binary matrix filled with 0's and 1's, find the largest square containing only 1's and return its area. Example: 这是一个DP题，好像是线性DP吧。 官方题解有DP的 阅读全文
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Given a m x n grid filled with non-negative numbers, find a path from top left to bottom right which minimizes the sum of all numbers along its path. 阅读全文
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A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below). The robot can only move either down or right at any p 阅读全文
摘要：
A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below). The robot can only move either down or right at any p 阅读全文