Create a function that returns the CSV representation of a two-dimensional numeric array. Example: input: [[ 0, 1, 2, 3, 4 ], [ 10,11,12,13,14 ], [ 20,21,22,23,24 ], [ 30,31,32,33,34 ]] output: '0,1,2,3,4\n' +'10,11,12,13,14\n' +'20,21,22,23,24\n' +'30,31,32,33,34' Array's length > 2.

def to_csv_string(array):
    return '\n'.join(','.join(map(str, x)) for x in array)

Python

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