How does the parent array work

#1

please explain the working of the parent array?

#2

hi @goyalvivek
pls go through the lecture… sir has explained everything… if u face any issue in code u can refer this https://ide.codingblocks.com/s/641881

#3

i hope its clear now??

#4

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#5

I had the same doubt, sir has not explained this in the video. So please explain why we made parent array and how does it work?