How does the shifting works behind the scenes?

#1

This part of the code went over.

while ( j >= i + 1 ) {
a [ j + 2 ] = a [ j ];
j–;
}

#2

hello @udatta

let say we have string .
abc
and we want to create two empty space in front i,e
we want something as
- - a b c

so what we need to do
abc- - move c 2 place to right
ab- - c
now move b 2 place to right
a- - bc
now move a 2 place to right
- - a b c
we get this

#3

Okay so j-- is actually going back and shifting b and then a respectively to right. Right?

#4

yeah…

#5

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