rotate the input square matrix by certain degrees (e.g. 270 or 450 etc.) without using rot90 or flip function.
its an extension of problem 798.
The Goldbach Conjecture, Part 2
It dseon't mettar waht oedrr the lrettes in a wrod are.
Sum of first n terms of a harmonic progression
Sum the entries of each column of a matrix which satisfy a logical condition.
Find and replaces spaces from a input string with *
Combinatorics - 01
Repeat elements of a vector
How lucky r u ?
Decimal Fraction to binary conversion
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