/*

Description:

Remove n exclamation marks in the sentence from left to right. n is positive integer.

Examples

remove(“Hi!”,1) === “Hi”

remove(“Hi!”,100) === “Hi”

remove(“Hi!!!”,1) === “Hi!!”

remove(“Hi!!!”,100) === “Hi”

remove(“!Hi”,1) === “Hi”

remove(“!Hi!”,1) === “Hi!”

remove(“!Hi!”,100) === “Hi”

remove(“!!!Hi !!hi!!! !hi”,1) === “!!Hi !!hi!!! !hi”

remove(“!!!Hi !!hi!!! !hi”,3) === “Hi !!hi!!! !hi”

remove(“!!!Hi !!hi!!! !hi”,5) === “Hi hi!!! !hi”

remove(“!!!Hi !!hi!!! !hi”,100) === “Hi hi hi”

Note

Please don’t post issue about difficulty or duplicate.

*/

function remove(s,n){

for (var i=0;i