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balanced_parenthesis.cpp
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balanced_parenthesis.cpp
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#include<bits/stdc++.h>
using namespace std;
bool isBalanced(string s) {
int n = s.size();
stack<char> st;
bool ans = true;
for(int i=0; i<n; i++) {
if(s[i] == '(' || s[i] == '{' || s[i] == '[') {
st.push(s[i]);
}
else if (s[i] == ')')
{
if(!st.empty() && st.top()=='(') {
st.pop();
}
else {
ans = false;
break;
}
}
else if (s[i] == '}')
{
if(!st.empty() && st.top()=='{') {
st.pop();
}
else {
ans = false;
break;
}
}
else if (s[i] == ']')
{
if(!st.empty() && st.top()=='[') {
st.pop();
}
else {
ans = false;
break;
}
}
}
if (!st.empty()) {
return false;
}
return ans;
}
int main() {
string s = "{([])}";
if(isBalanced(s)) {
cout<<"Balanced parenthesis";
}
else
{
cout<<"Not balanced";
}
return 0;
}