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Given an array of integers, find two numbers such that they add up to a specific target number.The function twoSum should return indices of the two nu... 阅读全文
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Reverse bits of a given 32 bits unsigned integer.For example, given input 43261596 (represented in binary as 00000010100101000001111010011100), return... 阅读全文
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题目就是：Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as the Hamming weight).For example, the 32-... 阅读全文
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Rotate an array of n elements to the right by k steps.For example, with n = 7 and k = 3, the array [1,2,3,4,5,6,7] is rotated to [5,6,7,1,2,3,4].Note:... 阅读全文
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问题是这样子的：Implement atoi to convert a string to an integer.Hint: Carefully consider all possible input cases. If you want a challenge, please do not see... 阅读全文
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1.不要浮躁 2.制定计划 3.执行力 阅读全文
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Given a column title as appear in an Excel sheet, return its corresponding column number.For example: A -> 1 B -> 2 C -> 3 ... Z -> 26 ... 阅读全文
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problem:Given an input string, reverse the string word by word.For example:Given s = "the sky is blue",return "blue is sky the".问题分析：如何准确的找到每一个需要清除的空格... 阅读全文
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problem：Given an array of size n, find the majority element. The majority element is the element that appears more than ⌊ n/2 ⌋ times.problem analysis... 阅读全文
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今天做了一道MinStack的题，深深的感到自己C++还完全没有学好！！！#include #include using std::stack;class MinStack {public: stack st; stack stm; void push(int x) { ... 阅读全文