Cody

# Problem 1632. Calculate the Number of Sign Changes in a Row Vector (No Element Is Zero)

Solution 2179801

Submitted on 28 Mar 2020
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### Test Suite

Test Status Code Input and Output
1   Fail
x = 1; y_correct = 0; assert(isequal(Sign_Changes(x),y_correct))

a = 1

Unrecognized function or variable 's'. Error in Sign_Changes (line 10) N=sum(s) Error in Test1 (line 3) assert(isequal(Sign_Changes(x),y_correct))

2   Pass
x =[7 1 2 -3]; y_correct =1; assert(isequal(Sign_Changes(x),y_correct))

a = 1 1 1 -1 N = 1

3   Pass
x =[7 1 -2 3]; y_correct =2; assert(isequal(Sign_Changes(x),y_correct))

a = 1 1 -1 1 N = 2

4   Pass
x =[-7 -1 -2 -3 -9 -8]; y_correct =0; assert(isequal(Sign_Changes(x),y_correct))

a = -1 -1 -1 -1 -1 -1 N = 0

5   Pass
x =[5 6 7 8 9 9]; y_correct =0; assert(isequal(Sign_Changes(x),y_correct))

a = 1 1 1 1 1 1 N = 0

6   Pass
x =[-5 6 7 8 9 -9]; y_correct =2; assert(isequal(Sign_Changes(x),y_correct))

a = -1 1 1 1 1 -1 N = 2

7   Pass
x =[5 -6 7 -8 9 -9]; y_correct =5; assert(isequal(Sign_Changes(x),y_correct))

a = 1 -1 1 -1 1 -1 N = 5

8   Pass
x =[-5 6 -7 8 -9 9]; y_correct =5; assert(isequal(Sign_Changes(x),y_correct))

a = -1 1 -1 1 -1 1 N = 5