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.
One of the Indian leaders that day was Crazy Horse, the tactical leader at the Little Bighorn. By the time of the battle, his braves had repeaters of their own, which Custer's men did not. The other factor is that Custer's men left their sabers back at their home base to save weight.