I was obtaining 34 for 7e4 too, but it's not a problem of the test suite. It just means that your code is not testing all possible combinations (and there are probably other numbers that will fail too). There is no known algorithm to generate the list of integer complexity (https://oeis.org/A005245), which means brute force is the only way to be sure. And brute force finds 32 for 7e4.
It someone doesn't believe 7e4 = (1+1)*(1+1)*(1+1)*(1+1)*(1+ (1+1)*(1+1+1)*(1+1+1)*(1+1+1)*(1+1+1)*(1+1+1)*(1+1+1)*(1+1+1)) (32 ones). Or 2^4*(1 + 2*3^7).
letter yes yes & letter no no
Remove white space from the string
Who invented zero?
String Array Basics, Part 3: Convert Cell Array with Missing Values to String Array
String Array Basics, Part 4: Convert String Array with Missing Values to Cell Array
Apply Function to Each Field of a Structure Array: Part 1
Combine the first and last names
Spot the First Occurrence of 5
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