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Problem 317. Find the stride of the longest skip sequence

Solution 1628855

Submitted on 16 Sep 2018
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Test Suite

Test Status Code Input and Output
1   Fail
a = [1 5 3 11 7 2 4 9]; stride = 2; assert(isequal(skip_sequence_stride(a),stride))

Assertion failed.

  
2   Pass
a = [1:5:20 23:3:42 2:9:100]; stride = 9; assert(isequal(skip_sequence_stride(a),stride))

  
3   Pass
a = [2:2:22 13:17]; a = a(randperm(length(a))); stride = 2; assert(isequal(skip_sequence_stride(a),stride))

  
4   Fail
a = 37:5:120; a = a(randperm(length(a))); stride = 5; assert(isequal(skip_sequence_stride(a),stride))

Assertion failed.

  
5   Fail
a = [1:5 101:10:171 201:205]; a = a(randperm(length(a))); stride = 10; assert(isequal(skip_sequence_stride(a),stride))

Assertion failed.

  
6   Fail
a = [7:17:302 primes(300)]; a = sort(a); stride = 17; assert(isequal(skip_sequence_stride(a),stride))

Assertion failed.

  

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