Higher! Lower! - MATLAB Cody - MATLAB Central

Problem 2635. Higher! Lower!

Difficulty:
(7)
Rate
My kids have started to play the "I'm thinking of a number between X and Y" game in the car on trips to and from their swim lessons. I'm trying to teach them the best way to arrive at the correct answer, so I could use a little MATLAB help here to show them what to do...
Using the bisection method (split X and Y, round down if there's a remainder), guess what the number is. Your output should be all of guesses it took for you to get to that number, with the last number in that trail being the number that I'm thinking of.
For example, I'm thinking of a number (8) between 1 and 10.
First guess is (1+10)/2 rounded down, or 5. Five is lower than 8, so your next guess should be (5+10)/2, rounding down to 7. Seven is lower than 8, so your next guess should be (7+10)/2, rounding down to 8.
Since this is the correct answer, your output should be [5 7 8].
The input to the function will be the low bound, the high bound, and the number I'm thinking of. You can assume that they're not cheating, and that the correct answer will be between the high and low bounds. The answer can be equal to the high or low bound, however.
Solve

Solution Stats

31.25% Correct | 68.75% Incorrect
Last Solution submitted on Jun 11, 2024

Problem Comments

Solution Comments

Show comments
Registration Now Open for MathWorks AUTOMOTIVE CONFERENCE 2025
...
Hello Community, We're excited to announce that registration is now open for the...

Problem Recent Solvers38

Suggested Problems

More from this Author80

Problem Tags

bisection guessing games

Community Treasure Hunt

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

Start Hunting!
Go to top of page