This code couldn't pass testcase ......generate parenthesis problem

import java.util.;
public class Main {
public static void main(String args[]) {
Scanner sc=new Scanner(System.in);
int n=sc.nextInt();
char out[]=new char[100];
generate(0,0,0,n,out);
}
static void generate(int opn,int clo,int i,int n,char out[]){
if(i==2
n){
for(int t=0;t<2*n;t++){
System.out.print(out[t]);
}
System.out.println();
}
if(opn<n){
out[i]=’(’;
generate(opn+1,clo,i+1,n,out);
}
if(clo<opn){
out[i]=’)’;
generate(opn,clo+1,i+1,n,out);
}
}
}

i m not able to submitt code…but it giving correct output for custom input

I`ll help u know about the problem

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