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];

Solve

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Last Solution submitted on Dec 11, 2025

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Armando Longobardi Alexander Ross 美倩 Jack Sampson

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