原题链接 题目原文： Numbers can be regarded as product of its factors. For exampl...

原题链接 题目原文： You are givennpairs of numbers. In every pair, the first numb...

原题链接 题目原文： Given an array of integers, returnindicesof the two numbers s...

原题链接 题目原文： Given an integer n, count the total number of digit 1 appeari...