Integers can be classified as generated numbers or self numbers. A generated number is one that can be expressed as the sum of another number and its digit sum. For example, 15 can be written as 12+(1+2); in other words, 15’s generator is 12. A self number cannot be expressed in this way.
Write a function to determine whether a number is a prime self number.
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Nice Problem!
but I found remarkable your syntax on test case Nr. 27:
a = arrayfun(@(k) isPrimeSelf(n(k)),1:length(n));
if you use 'arrayfun' you can actually parse the vector directly and you can avoid parsing the indices. The following expression would be more narrow:
a = arrayfun(@isPrimeSelf,n)
Thanks for pointing that out. I've made the change.