Need n squares that equal one square all together, none zero, none fractured.
For example, calling squares(2) should output [16 9] or [25 144] etc, because
16=4*4, 9=3*3, and 16+9=5*5, similarly 25=5*5, 144=12*12, and 25+144=13*13.
Swap the first and last columns
Given an unsigned integer x, find the largest y by rearranging the bits in x
Check if sorted
Given n, create n random numbers such that their standard deviation is also n.
given 3 sides, find area of this triangle
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