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

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

Solution Comments

Problem Recent Solvers386

Suggested Problems

• Project Euler: Problem 6, Natural numbers, squares and sums.

  2376 Solvers

• Project Euler: Problem 10, Sum of Primes

  1935 Solvers

• Return the Fibonacci Sequence

  1314 Solvers

• Whether the input is vector?

  10181 Solvers

• Say something funny

  743 Solvers

More from this Author56

• Project Euler: Problem 16, Sums of Digits of Powers of Two

  145 Solvers

• Cache me Outside

  97 Solvers

• Lychrel Number Test (Inspired by Project Euler Problem 55)

  104 Solvers

• Next Lower Power of B

  105 Solvers

• Next Higher Power of B

  149 Solvers