摘要：
Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list. 阅读全文
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Given a sorted linked list, delete all duplicates such that each element appear only once. 阅读全文
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Given n non-negative integers representing the histogram's bar height where the width of each bar is 1, find the area of largest rectangle in the histogram. 阅读全文
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Follow up for "Remove Duplicates":
What if duplicates are allowed at most twice? 阅读全文
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Follow up for "Search in Rotated Sorted Array":
What if duplicates are allowed? 阅读全文
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Given a 2D board and a word, find if the word exists in the grid. 阅读全文
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Given a set of distinct integers, S, return all possible subsets. 阅读全文
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Given two integers n and k, return all possible combinations of k numbers out of 1 ... n. 阅读全文
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Given a string S and a string T, find the minimum window in S which will contain all the characters in T in complexity O(n). 阅读全文
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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, white and blue. 阅读全文
摘要：
Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties:
Integers in each row are sorted from left to right.
The first integer of each row is greater than the last integer of the previous row. 阅读全文