An Armstrong number of three digits is an integer such that the sum of the cubes of its digits is equal to the number itself. For example, 153 is an Armstrong number since 1^3 + 5^3 + 3^3 = 153.
Check to see if a Sudoku Puzzle is Solved
Project Euler: Problem 6, Natural numbers, squares and sums.
Generate a string like abbcccddddeeeee
Find the logic
give-nth-decimal-place-of-pi up to 100 digits
Simple date to serial no. conversion
Given a 4x4 matrix, swap the two middle columns
Who invented zero?
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