## Playing ping-pong with ping-pong machine

It’s quite interesting and it’s easy to get tired even if you just play half an hour. Special thanks to Dong for GoPro.

Programming, Engineering, and My Life

Find one missing number from 1 to N Given an array of size N-1, containing integer numbers from 1 to N, but there is one number missing. Return the missing number. Analysis Assuming the array given is A[], it’s easy to get N since we have the size of the array: N = A.length + 1. … Read more