Problem Find the nth digit of the infinite integer sequence 1, 2, 3, 4, ...

Problem Given two strings s and t which consist of only lowercase letter...

Problem Given a string, find the first non-repeating character in it and...

Problem Given an arbitrary ransom note string and another string contain...

Problem We are playing the Guess Game. The game is as follows:I pick a n...

Problem Calculate the sum of two integers a and b, but you are not allow...

Problem Given two arrays, write a function to compute their intersection...