Cody

Problem 2851. Find the rank of a matrix

Solution 1979840

Submitted on 17 Oct 2019
This solution is locked. To view this solution, you need to provide a solution of the same size or smaller.

Test Suite

Test Status Code Input and Output
1   Fail
x = 1; y_correct = 1; assert(isequal(ranx(x),y_correct))

m = 1

Output argument "y" (and maybe others) not assigned during call to "ranx". Error in Test1 (line 3) assert(isequal(ranx(x),y_correct))

2   Fail
x = [1 0;0 0]; y_correct = 1; assert(isequal(ranx(x),y_correct))

m = 1 0

Output argument "y" (and maybe others) not assigned during call to "ranx". Error in Test2 (line 3) assert(isequal(ranx(x),y_correct))

3   Fail
x = [1 1;1 0]; y_correct = 2; assert(isequal(ranx(x),y_correct))

m = 1 1

Output argument "y" (and maybe others) not assigned during call to "ranx". Error in Test3 (line 3) assert(isequal(ranx(x),y_correct))

4   Fail
x = [1 0;0 1]; y_correct = 2; assert(isequal(ranx(x),y_correct))

m = 1 0

Output argument "y" (and maybe others) not assigned during call to "ranx". Error in Test4 (line 3) assert(isequal(ranx(x),y_correct))

5   Fail
x = [1 0 0;1 0 0;1 0 0]; y_correct = 1; assert(isequal(ranx(x),y_correct))

m = 1 1 1 ans = 0×1 empty double column vector

Output argument "y" (and maybe others) not assigned during call to "ranx". Error in Test5 (line 3) assert(isequal(ranx(x),y_correct))

6   Pass
filetext = fileread('ranx.m'); assert(isempty(strfind(filetext, 'rank')),'rank forbidden')