Problem 68. Kaprekar Steps

Solution 1436614

Submitted on 8 Feb 2018

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Steffen Zelzer on 8 Feb 2018

This works for all but test 3 where it gives, in my opinion, the correct answer 8.

TurqoiseInt on 13 Feb 2018

But zero is not sorted in this solution. You should get same answer for input x = 691 and 6910. (And then no need for abs())

1) 9610-0169=9441
2) 9441-1449=7992
3) 9972-2799=7173
4) 7731-1377=6354
5) 6543-3456=3087
6) 8730-0378=8352
7) 8532-2358=6174

Test	Status	Code Input and Output
1	Pass	x = 3276; y_correct = 5; assert(isequal(KaprekarSteps(x),y_correct))
2	Pass	x = 3; y_correct = 6; assert(isequal(KaprekarSteps(x),y_correct))
3	Fail	x = 691; y_correct = 7; assert(isequal(KaprekarSteps(x),y_correct)) Assertion failed.
4	Pass	x = 3333; y_correct = Inf; assert(isequal(KaprekarSteps(x),y_correct))
5	Pass	x = 1; y_correct = 5; assert(isequal(KaprekarSteps(x),y_correct))
6	Pass	x = 6174; y_correct = 0; assert(isequal(KaprekarSteps(x),y_correct))
7	Pass	x = 1234; y_correct = 3; assert(isequal(KaprekarSteps(x),y_correct))
8	Pass	x = 3141; y_correct = 5; assert(isequal(KaprekarSteps(x),y_correct))
9	Pass	x = 8080; y_correct = 6; assert(isequal(KaprekarSteps(x),y_correct))