Error in merge sort challenge

#1

The link to question is -

https://online.codingblocks.com/app/player/96041/content/73549/4917/code-challenge

The link to code is –

I am not able to remove the error. Please tell what to do

#2

Hey @abhaygarg2001,
This code is the problematic part in your code:

for x in range(len(a)):
    a[x]=b[p]
    p+=1

After merging the two subarrays (start:mid) and (mid+1:high) int the array b, you are iterating on the whole array (range(a)) and trying to fill it instead of just the needed part which is (start:high).

Hope this resolved your issue.

#3

Look at this snippet and you’ll understand the correct approach:

p = 0
for x in range(s, e+1):
    a[x]=b[p]
    p+=1
#4

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