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

Created by @bmtran

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 ];

Problem Group

Solution Statistics

105 correct solutions 115 incorrect solutions
Last solution submitted on Dec 24, 2014

Problem Comments