Programs/balance.cpp at master · Pritam099/Programs · GitHub

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//check for balanced brackets.

#include <iostream>
#include<stack>
using namespace std;

bool areBracketsBalanced(string expr)
{
	stack<char> temp;
		for(int i=0;i<expr.length();i++)
		{
			if(temp.empty())
			{
				temp.push(expr[i]);
			}
			else if((temp.top()=='('&& expr[i]==')') || (temp.top()=='{' && expr[i]=='}') || (temp.top()=='[' && expr[i]==']'))
			{
				temp.pop();
			}
			else
			{
				temp.push(expr[i]);
			}
		}
        if(temp.empty())
		{
			return true;
		}
		return false;

}

int main()
{
    string s;
    cin >> s;
    string expr;
    for(int i=0;i<s.length();i++){
        if(s[i]=='(' || s[i]==')' || s[i]=='{' || s[i]=='}' || s[i]=='[' || s[i]==']'){
            expr.push_back(s[i]);
        }
    }

    cout << expr << " -> ";
    if (areBracketsBalanced(expr))
		cout << " Balanced";
	else
		cout << " Not Balanced";

}