# Define a procedure, find_element, # that takes as its inputs a list # and a value of any type, and # returns the index of the first # element in the input list that # matches the value. # If there is no matching element, # return -1. def find_element(p,q): count = 0 for e in p: if e == q: return count else: count = count + 1 return -1 print find_element([1,2,3],3) #>>> 2 print find_element(['alpha','beta'],'gamma') #>>> -1
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