Problem 729. Flag largest magnitude swings as they occur

Solution 1279961

Submitted on 2 Oct 2017 by yurenchu

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yurenchu on 2 Oct 2017

Flawed solution; fails (for example) when 0<0.

Test	Status	Code Input and Output
1	Pass	delta = [1 -3 4 2 -1 6 -2 -7] peaks = [1 -1 1 0 0 1 0 -1] assert(isequal(magnitude_swing(delta),peaks)) delta = 1 -3 4 2 -1 6 -2 -7 peaks = 1 -1 1 0 0 1 0 -1 ans = 1 -1 1 0 0 1 0 -1
2	Pass	delta = [1 4 5 -2 1 7 -4 -6 5 3] peaks = [1 1 1 -1 0 1 -1 -1 0 0] assert(isequal(magnitude_swing(delta),peaks)) delta = 1 4 5 -2 1 7 -4 -6 5 3 peaks = 1 1 1 -1 0 1 -1 -1 0 0 ans = 1 1 1 -1 0 1 -1 -1 0 0
3	Pass	delta = [1 4 5 -2 1 7 7 -4 -6 5 3] peaks = [1 1 1 -1 0 1 0 -1 -1 0 0] assert(isequal(magnitude_swing(delta),peaks)) delta = 1 4 5 -2 1 7 7 -4 -6 5 3 peaks = 1 1 1 -1 0 1 0 -1 -1 0 0 ans = 1 1 1 -1 0 1 0 -1 -1 0 0

Test

Status

Code Input and Output

Pass

delta = [1 -3 4 2 -1 6 -2 -7] peaks = [1 -1 1 0 0 1 0 -1] assert(isequal(magnitude_swing(delta),peaks))

delta = 1 -3 4 2 -1 6 -2 -7 peaks = 1 -1 1 0 0 1 0 -1 ans = 1 -1 1 0 0 1 0 -1

Pass

delta = [1 4 5 -2 1 7 -4 -6 5 3] peaks = [1 1 1 -1 0 1 -1 -1 0 0] assert(isequal(magnitude_swing(delta),peaks))

delta = 1 4 5 -2 1 7 -4 -6 5 3 peaks = 1 1 1 -1 0 1 -1 -1 0 0 ans = 1 1 1 -1 0 1 -1 -1 0 0

Pass

delta = [1 4 5 -2 1 7 7 -4 -6 5 3] peaks = [1 1 1 -1 0 1 0 -1 -1 0 0] assert(isequal(magnitude_swing(delta),peaks))

delta = 1 4 5 -2 1 7 7 -4 -6 5 3 peaks = 1 1 1 -1 0 1 0 -1 -1 0 0 ans = 1 1 1 -1 0 1 0 -1 -1 0 0