Swap the first and last columns
Given a matrix, swap the 2nd & 3rd columns
Find the maximum two numbers of every column of a matrix
Dimensions of a rectangle
Find the index of n in magic(n)
Sieve of Eratosthenes - 02
generate nth pentatope number
Ugly numbers - 01
Spiral Out - 02
check whether a number is a pentatope number
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