weixin_39145266的博客

1 题目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 identify repeated sequences within the DNA....

1 题目Given a set ofdistinctintegers,nums, return all possible subsets (the power set).Note:The solution set must not contain duplicate subsets.Example:Input: nums = [1,2,3]Output:[ [3]...

1 题目Given a non-empty array of integers, every element appears three times except for one, which appears exactly once. Find that single one.Note:Your algorithm should have a linear runtime comp...

1 题目Given a range [m, n] where 0 <= m <= n <= 2147483647, return the bitwise AND of all numbers in this range, inclusive.Example 1:Input: [5,7]Output: 4Example 2:Input: [0,1]Outpu...

1 题目Given an array of numbers nums, in which exactly two elements appear only once and all the other elements appear exactly twice. Find the two elements that appear only once.Example:Input: [...

1 题目Given a positive integernand you can do operations as follow:Ifnis even, replacenwithn/2. Ifnis odd, you can replacenwith eithern+ 1orn- 1.What is the minimum number of repla...

1 题目Given a non negative integer numbernum. For every numbersiin the range0 ≤ i ≤ numcalculate the number of 1's in their binary representation and return them as an array.Example 1:Input: ...