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41_Valid_Paranthesis.cpp
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41_Valid_Paranthesis.cpp
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#include<iostream>
#include<stack>
using namespace std;
int main()
{
stack<char> st;
string s1 = "({[]})";
// string s1 = "([{}])";
// string s1 = "({[}])";
// string s1 = "[({]})";
int size = s1.size();
bool flag = true;
for(int i = 0; i < size;i++){
if(s1[i]=='(' || s1[i]=='{' || s1[i]=='['){
st.push(s1[i]);
}
else if(s1[i]==')'){
if((st.top() == '(') && !st.empty()){
st.pop();
}
else{
flag = false;
break;
}
}
else if(s1[i]=='}'){
if((st.top() == '{') && !st.empty()){
st.pop();
}
else{
flag = false;
break;
}
}
else if(s1[i]==']'){
if((st.top() == '[') && !st.empty()){
st.pop();
}
else{
flag = false;
break;
}
}
}
cout<<flag<<endl;
return 0;
}