Comparator function

#1

I am using comparator for sorting strings according to their lengths.
bool compare(string a,string b){
return a.length > b.length
}

shouldn’t this sort in ascending order ? Why in my case it doing that in descending order

#2

Since you are using > , it will sort in descending order or say after sorting the largest length string will be at the beginning. If you use < then smallest length string will be at the beginning.
So remember this > – then descending
< – then ascending

#3

how does it relate to swap function… If a = 9, b = 6.

#4

In your doubt, you considered a and b as string.
However if a=9 and b=6
If you want sort in descending order… then you would return a>b… means when a will be less than b…only then swapping will take place. So result will be 9,6
If you want sort in ascending order… then you would return a<b… means when a will be greater than b…only then swapping will take place. So result will be 6,9

#5

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