03 2016 档案
摘要: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
摘要:题目: Find the contiguous subarray within an array (containing at least one number) which has the largest product. For example, given the array [2,3,-2,
阅读全文
摘要:题目: Given a list of airline tickets represented by pairs of departure and arrival airports [from, to], reconstruct the itinerary in order. All of the
阅读全文
摘要:All DNA is composed of a series of nucleotides abbreviated as A, C, G, and T, for example: "ACGAATTCCG". When studying DNA, it is sometimes useful to
阅读全文
摘要:The set [1,2,3,…,n] contains a total of n! unique permutations. By listing and labeling all of the permutations in order, We get the following sequenc
阅读全文
摘要:Additive number is a string whose digits can form additive sequence. A valid additive sequence should contain at least three numbers. Except for the f
阅读全文
摘要:Given an array of strings, group anagrams together. For example, given: ["eat", "tea", "tan", "ate", "nat", "bat"], Return: Note: 这道题要把所有字母组成相同的单词归为一类
阅读全文
摘要:Given an integer n, count the total number of digit 1 appearing in all non-negative integers less than or equal to n. For example: Given n = 13, Retur
阅读全文
摘要:题目: Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in place. Follow up: Did you use extra space? A straight forwa
阅读全文
摘要:题目: Given an Iterator class interface with methods: next() and hasNext(), design and implement a PeekingIterator that support the peek() operation --
阅读全文
摘要:Given a string of numbers and operators, return all possible results from computing all the different possible ways to group numbers and operators. Th
阅读全文
摘要:题目: According to the Wikipedia's article: "The Game of Life, also known simply as Life, is a cellular automaton devised by the British mathematician J
阅读全文