I have solved #103 and #105, but I have a hard time understanding #106, specifically where does the number 25 come from?
Got this as an homework assignment and not really sure where to start! Given the set {1,2,3,4}, you can form six combinations of length two from that set, viz:
Is there a direct way of getting the Nth combination of an ordered set of all combinations of nCr? Example: I have four elements: [6, 4, 2, 1]. All the possible combinations by taking three at a time
Given a 10 digit Telephone Number, we have to print all possible strings created from that. The mapping of the numbers is the one as exactly on a phone\'s keypad.
I\'m looking to generate all possible values of n-digit number, in the following order, where the 开发者_Python百科sequence is dictated by the sum of the individual digits.
Wh开发者_开发知识库at is the most efficient way to generate all the combinations, dispositions and permutations of an array in PHP?Here is code to get all permutations:
So Wendy\'s advertises their sandwich as having 256 combinations - meaning there are 8 ingredients you can either have to not have (although I wonder why they would count the combination where you inc
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