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.
Test for balanced parentheses
Back to basics 13 - Input variables
Sum the Digits of a Number
Multiply by 3
Basics: 'Find the eigenvalues of given matrix
check wether armstrong no or not
Find the logic
match 2 string
given 4x4 matrix swap the two middle columns
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