Implement an algorithm to print all valid combinations of n-pairs of parentheses
#include<stdio.h> void f(int idx,int left,int right,char *buf) { if(left == 0 && right == 0) { buf[idx] = '
Implement an algorithm to print all valid combinations of n-pairs of parentheses
#include<stdio.h> void f(int idx,int left,int right,char *buf) { if(left == 0 && right == 0) { buf[idx] = '