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

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

Solution Comments

Problem Recent Solvers364

Suggested Problems

• Cell joiner

  5404 Solvers

• Sums with Excluded Digits

  2077 Solvers

• give nth decimal place of pi

  383 Solvers

• subtract central cross

  458 Solvers

• Y=X

  913 Solvers

More from this Author56

• Square Digits Number Chain Terminal Value (Inspired by Project Euler Problem 92)

  212 Solvers

• Proper Factors

  532 Solvers

• Read a Soroban Abacus

  226 Solvers

• Test if a Number is a Palindrome without using any String Operations

  220 Solvers

• English to Pig Latin Translator

  144 Solvers