https://onlinegdb.com/BJreLD8Nv

#1

plz tell how to use comparator in this

#2

hello @asinghal1_be19
define a compare function of ur own.
write ur comparsion logic inside tha function.
and then pass that function name as third argument in ur sort function.

refer this->

#3

now what is the issue in i thttps://onlinegdb.com/r1aXnPU4D

#4

logic for checking whether one string is substring of another is not correct.

check this->

image

#5

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