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Problem 308. Matrix with different incremental runs

Created by Julio

Given a vector of positive integers a (>=0); How does one create the matrix where the ith column contains the vector 1:a(i) possibly padded with zeros:

in->a = [3 2 4];

out->b = [1 1 1;2 2 2;3 0 3;0 0 4];

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69 correct solutions 16 incorrect solutions
Last solution submitted on Nov 02, 2014

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