Is Perfect Number 完美数（esay）
ksharpdabu Good morning! Here’s your coding interview problem for today. This problem was asked by Microsoft. A number is considered perfect if its digits sum up to exactly 10. Given a…
7. Reverse Integer整数反转 (Easy)
Given a 32-bit signed integer, reverse digits of an integer.（将一个32位的有符号的整数的进行反转，注意：反转后可能会溢出，如果溢出，则返回0） Example 1: Input: 123 Output: 321 Example 2: Input: -123 Output: -321 Example 3: Input: 120 Output: 21 Note: Assume…