Your function should turn the input integers into binary form and count the number of 1s in the binary. If the number is odd, return -1; else, return 1 (for each input).
For example, if the input number is 10:
  1. Turn it into binary form: 1010
  2. Count 1s in the binary: 2
  3. Judge if it's even or odd: even
  4. So the output is 1.
Try to find the best algorithm! My best size is 22.
Solve

Solution Stats

69 Solutions

23 Solvers

Last Solution submitted on Mar 24, 2026

Last 200 Solutions

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers23

George Berken minnolina Riccardo G. Lorenzo

Suggested Problems

More from this Author14

Problem Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!