For a given input n, make an n by n identity matrix that contains the elements 1:n along its diagonal. For example, if input=5:

 output = [1 0 0 0 0;
           0 2 0 0 0;
           0 0 3 0 0;
           0 0 0 4 0;
           0 0 0 0 5]
Solve

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Last Solution submitted on Feb 05, 2026

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董济川 qiushui wu Lorenzo

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