Cody

# Problem 42673. Longest Collatz Sequence

Solution 3086806

Submitted on 6 Oct 2020
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### Test Suite

Test Status Code Input and Output
1   Pass
x = 10; assert(isequal(euler14(x),9))

ans = -1 ans = 10 mx = 19 y = 9

2   Pass
x = 100; assert(isequal(euler14(x),97))

ans = -1 ans = 100 mx = 118 y = 97

3   Pass
x = 96; assert(isequal(euler14(x),73))

ans = -1 ans = 96 mx = 115 y = 73

4   Pass
x = 1000; assert(isequal(euler14(x),871))

ans = -1 ans = 1000 mx = 178 y = 871

5   Pass
x = 870; assert(isequal(euler14(x),703))

ans = -1 ans = 870 mx = 170 y = 703

6   Fail
assert(isequal(euler14(871),871))

ans = -1 ans = 871 mx = 170 y = 703

Assertion failed.

7   Pass
x = 77030; assert(isequal(euler14(x),52527))

ans = -1 ans = 77030 mx = 339 y = 52527

8   Fail
x = 77031; assert(isequal(euler14(x),77031))

ans = -1 ans = 77031 mx = 339 y = 52527

Assertion failed.

9   Pass
assert(isequal(euler14(500000),410011))

ans = -1 ans = 500000 mx = 448 y = 410011

10   Pass
z = 900000; y_correct=837799; assert(isequal(euler14(z),y_correct))

ans = -1 ans = 900000 mx = 524 y = 837799

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