Problem 2351. Replace Nonzero Numbers with 1

Created by Vishal

Solve Later

Given the matrix x, return the matrix y with non zero elements replaced with 1.

Example:

 Input  x =  [ 1 2 0 0 0
               0 0 5 0 0 
               2 7 0 0 0
               0 6 9 3 3 ]

 Output y is [ 1 1 0 0 0
               0 0 1 0 0 
               1 1 0 0 0
               0 1 1 1 1 ]

Solve

Solution Stats

2148 Solutions
442 Solvers

Last Solution submitted on Jan 14, 2026

Last 200 Solutions

Problem Comments

6 Comments

6 Comments

Show 3 older comments

eric landiech on 6 Jun 2014

>> isequal(NaN,NaN)
ans =
0

Therefore, the second test is inappropriate

Jan Orwat on 6 Jun 2014

isequaln should be used.

Jon on 6 Jun 2014

The way the problem is written, all nonzero elements, including NaN, should be changed to 1, but the test case doesn't work this way.

Ned Gulley on 6 Jun 2014

I updated the second test with isequaln so that NaN == NaN is true.

Stanislao Pinzón on 17 May 2020

It should be mentioned that 1 must be placed in the non-zero elements except for NaN.

Brianne Tengan on 12 Dec 2020

Replace all nonzero numbers with 1. Leave any NaN elements as NaN.

Solution Comments

Show comments

Problem Recent Solvers442

Problem Tags

Community Treasure Hunt

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

Start Hunting!

Problem 2351. Replace Nonzero Numbers with 1

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers442

Suggested Problems

More from this Author6

Problem Tags

Community Treasure Hunt

Problem 2351. Replace Nonzero Numbers with 1

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers442

Suggested Problems

More from this Author6

Problem Tags

Community Treasure Hunt

Players