Cody

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

Solution 3011299

Submitted on 30 Sep 2020 by ivan fernandez
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Test Suite

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

x = 1 changeSing = 0 N = 0

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

x = 1 1 2 -3 x = 1 1 2 -3 x = 1 1 1 -3 x = 1 1 1 0 changeSing = 0 changeSing = 1 N = 1

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

x = 1 1 -2 3 x = 1 1 -2 3 x = 1 1 0 3 x = 1 1 0 1 changeSing = 0 changeSing = 1 changeSing = 2 N = 2

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

x = 0 -1 -2 -3 -9 -8 x = 0 0 -2 -3 -9 -8 x = 0 0 0 -3 -9 -8 x = 0 0 0 0 -9 -8 x = 0 0 0 0 0 -8 x = 0 0 0 0 0 0 changeSing = 0 N = 0

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

x = 1 6 7 8 9 9 x = 1 1 7 8 9 9 x = 1 1 1 8 9 9 x = 1 1 1 1 9 9 x = 1 1 1 1 1 9 x = 1 1 1 1 1 1 changeSing = 0 N = 0

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

x = 0 6 7 8 9 -9 x = 0 1 7 8 9 -9 x = 0 1 1 8 9 -9 x = 0 1 1 1 9 -9 x = 0 1 1 1 1 -9 x = 0 1 1 1 1 0 changeSing = 0 changeSing = 1 changeSing = 2 N = 2

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

x = 1 -6 7 -8 9 -9 x = 1 0 7 -8 9 -9 x = 1 0 1 -8 9 -9 x = 1 0 1 0 9 -9 x = 1 0 1 0 1 -9 x = 1 0 1 0 1 0 changeSing = 0 changeSing = 1 changeSing = 2 changeSing = 3 changeSing = 4 changeSing = 5 N = 5

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

x = 0 6 -7 8 -9 9 x = 0 1 -7 8 -9 9 x = 0 1 0 8 -9 9 x = 0 1 0 1 -9 9 x = 0 1 0 1 0 9 x = 0 1 0 1 0 1 changeSing = 0 changeSing = 1 changeSing = 2 changeSing = 3 changeSing = 4 changeSing = 5 N = 5

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