lol much simpler than mine :)
Swap the first and last columns
Given an unsigned integer x, find the largest y by rearranging the bits in x
Back to basics 23 - Triangular matrix
Divisible by 4
Mean = Standard Deviation
Write c^3 as sum of two squares a^2+b^2
String permutations on phone keyboard
Bridge and Torch Problem - Minimum time
List all of the integer points in a bounded feasble region
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