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A competition to solve a particular problem through the usage and manipulation of arrays.
3
votes
First Last Last First
Python 3, 97 93 bytes
-4 bytes thanks to ovs
def h(f,l,a,I=list.index):j=I(a,f);i=len(a)+~I(a[::-1],l);print(I(a[j:],l)+j,i-I(a[i::-1],f))
Try it online!