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题目： A message containing letters from A-Z is being encoded to numbers using the following mapping: 'A' -> 1 'B' -> 2 ... 'Z' -> 26 Given an encoded me 阅读全文
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题目： Given a collection of integers that might contain duplicates, nums, return all possible subsets. Note: Elements in a subset must be in non-descend 阅读全文
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题目： The gray code is a binary numeral system where two successive values differ in only one bit. Given a non-negative integer n representing the total 阅读全文
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题目： Given two sorted integer arrays A and B, merge B into A as one sorted array. Note:You may assume that A has enough space (size that is greater or 阅读全文
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题目： Given a string s1, we may represent it as a binary tree by partitioning it to two non-empty substrings recursively. Below is one possible represen 阅读全文
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题目： Given a linked list and a value x, partition it such that all nodes less than x come before nodes greater than or equal to x. You should preserve 阅读全文
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题目： Given a 2D binary matrix filled with 0's and 1's, find the largest rectangle containing all ones and return its area. 链接： http://leetcode.com/prob 阅读全文
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题目： Given a sorted linked list, delete all duplicates such that each element appear only once. For example,Given 1->1->2, return 1->2.Given 1->1->2->3 阅读全文
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题目： Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list. For example,Given 阅读全文
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题目： Follow up for "Search in Rotated Sorted Array":What if duplicates are allowed? Would this affect the run-time complexity? How and why? Write a fun 阅读全文