Counting Bits（Difficulty: Medium）

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Counting Bits（Difficulty: Medium）

题目: Given a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1's in their binary representation and return them as an array. Example:For num = 5 you should return [0,1,1,2,1,2]. 实现: class Solution…

Number of 1 Bits（Difficulty: Easy）

题目: 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 00000000000000000000000000001011, so the function should…

Longest Substring Without Repeating Characters（Difficulty: Medium）

题目: Given a string, find the length of the longest substring without repeating characters. Examples: Given "abcabcbb", the answer is "abc", which the length is 3. Given "bbbbb", the answer is "b", with the length of…

ACM_Reverse Bits（反转二进制）

Reverse Bits Time Limit: 2000/1000ms (Java/Others) Problem Description: Reverse bits of a given 32 bits signed integer.For example, given input 43261596 (represented in binary as 00000010100101000001111010011100), return 964176192 (represented in bin…

54.Counting Bits（计算1的个数）

Level: Medium 题目描述: Given a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1's in their binary representation and return them as an array. Example 1: Input: 2 Output: [0,1,1] Example 2: Input:…

【LeetCode】Counting Bits（338）

1. Description Given a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1's in their binary representation and return them as an array. Example: For num = 5 you should return [0,1,1,2,1,2]. 2. Answ…