Python loop, Index error

Question

I'm new to python, getting an index error on line 6. what's the deal? trying to create a simple recursion pattern to solve a problem.

Problem// For example, suppose the numbers list were [1, 3, 0, 1]. 0 redirects to 1, who redirects to 3, who redirects back to 1. There is a loop of two : 1, 3. Thus the answer would be 2. Note that even though you started with 0, it is not part of the loop.

some test cases my function must output

Test cases

Inputs: (int list) numbers = [1, 0] Output: (int) 2

Inputs: (int list) numbers = [1, 2, 1] Output: (int) 2

def answer(numbers,depth=0):
    if depth > 0:
        if depth > numbers:
            return false
        for m in range(0,depth):
            if numbers[m] == numbers[depth]:
                return depth+1;
    return answer(numbers, depth+1)

im sorry i'm not sure,what this is asking, is the for loop not iterating? — Jeremy Nelson
– Jeremy Nelson, Commented Sep 12, 2015 at 3:04

Joe Chakra · Accepted Answer · 2015-09-12 01:19:59Z

0

range(0,depth)

returns 0,1,..,depth-1

Also

if depth > numbers:

does not make sense: comparing integer with list

answered Sep 12, 2015 at 1:19

Joe Chakra

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