Problem 139. Determine if a Given Number is a Triangle Number

Description:

Determine if the elements of an input array are triangle numbers and return the result as an array with the same dimensions as the input.

Example:

    Input  = [ 1 2 3 ];
    Output = [ 1 0 1 ];
Solve

Solution Stats

36.83% Correct | 63.17% Incorrect
Last Solution submitted on Jan 11, 2026

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