LeetCode

Excel Sheet Column Number

Related to question Excel Sheet Column Title Given a column title as appear in an Excel sheet, return its corresponding column number. For example: A -> 1 B -> 2 C -> 3 ... ...

Reverse Bits 续

Reverse bits of a given 32 bits unsigned integer. For example, given input 43261596 (represented in binary as 00000010100101000001111010011100), return 964176192 (represented in binary as001110010...

Reverse Bits

Reverse bits of a given 32 bits unsigned integer. For example, given input 43261596 (represented in binary as 00000010100101000001111010011100), return 964176192 (represented in binary as 001110010...

Factorial Trailing Zeroes 续

Given an integer n, return the number of trailing zeroes in n!. Note: Your solution should be in logarithmic time complexity.   有了前面C里的仔细研究,python实现应该是手到擒来,突然这时候才注...

Factorial Trailing Zeroes

Given an integer n, return the number of trailing zeroes in n!. Note: Your solution should be in logarithmic time complexity.   这个题目貌似十分清晰,求n的阶乘,末尾的0个数 末尾为0的个数,也就...

Number of 1 Bits 续

不论难易,每道题用python和C都实现一遍是目标 这道题就比较简单了,一次到位int hammingWeight(uint32_t n){ int i = 0; while (n){ if (n % 2) ++i; n = n / 2; } ...

Number of 1 Bits

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-bit integer ’11' has binary representation 00000000...

Rotate Array 继续续

继续用C语言来完成这道题,给出的函数和参数为void rotate(int nums[], int n, int k) { } 一个数组,一个长度,一个旋转移动次数 考虑C语言可不能想脚本语言那样才想问题,比如对于[1, 2, 3, 4, 5,6],n =...

Rotate Array 续

前面提交的主要出现两个问题: 1:题目意思没弄对,在函数里面print是不对的,原意是通过函数调用修改穿进去的列表参数 2:由于传进去的列表是可变数据类型,因此要想修改传进去的参数列表,不能重新创建一个列表...

Rotate Array

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:Try to come up as many solutions as you can, ...

快速排序

快速排序WIKI上这么描述的: 快速排序使用分治法(Divide and conquer)策略来把一个序列(list)分为两个子序列(sub-lists),步骤为: (1)从数列中挑出一个元素,称为“基准”(pivot) (2)重新排序数列,所...

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