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.
Remove all the consonants
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given 4x4 matrix swap the two middle columns
check wether armstrong no or not
Find the logic
Given a 4x4 matrix, swap the two middle columns
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