leetcode Question 42: Letter Combinations of a Phone Number. Given a digit string, return all possible letter combinations that the number could represent. A mapping of digit to letters (just like on the telephone buttons) is given below.
The Battle of the Little Bighorn, known to the Lakota and other Plains Indians as the Battle of the Greasy Grass and commonly referred to as Custer's Last Stand, was an armed engagement between combined forces of the Lakota, Northern Cheyenne, and Arapaho tribes and the 7th Cavalry Regiment of the United States Army.
The two dogs and the mountain lion fight evenly for a while, but then Billy sees Little Ann receive a sharp wound to the shoulder. He rushes in with his axe. A moment later, knocked to the ground, the big cat is about to pounce on him, when his two dogs jump up as one and save Billy.