03 2017 档案
摘要：Given a string and an integer k, you need to reverse the first k characters for every 2k characters counting from the start of the string. If there ar
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摘要：The count-and-say sequence is the sequence of integers beginning as follows:1, 11, 21, 1211, 111221, ... 1 is read off as "one 1" or 11.11 is read off
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摘要：Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the
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摘要：Given an arbitrary ransom note string and another string containing letters from all the magazines, write a function that will return true if the rans
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摘要：Given a roman numeral, convert it to an integer. Input is guaranteed to be within the range from 1 to 3999. Subscribe to see which companies asked thi
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摘要：Given a word, you need to judge whether the usage of capitals in it is right or not. We define the usage of capitals in a word to be right when one of
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摘要：Write a function to delete a node (except the tail) in a singly linked list, given only access to that node. Supposed the linked list is 1 -> 2 -> 3 -
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摘要：Given a column title as appear in an Excel sheet, return its corresponding column number. For example: C++（3ms）：
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摘要：Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Examples: C++(106ms): 使用unordered_
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摘要：Given two arrays, write a function to compute their intersection. Example:Given nums1 = [1, 2, 2, 1], nums2 = [2, 2], return [2]. Note: Each element i
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摘要：Find the sum of all left leaves in a given binary tree. Example: C++(6ms): C++:
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摘要：Given an integer, return its base 7 string representation. Example 1: Example 2: Java（15ms）： 把一个6进制的数转成7进制 public String convertToBase7(int num) { ret
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摘要：Given a non-empty integer array of size n, find the minimum number of moves required to make all array elements equal, where a move is incrementing n
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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
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摘要：Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a specific target number. The function
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摘要：Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order of the non-zero elements. For example, giv
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