Function pushin

Java/Stack/reverseasttring.cpp:6–18

pushin function to insert elements at correct position

stack<int> st;
//pushin function to insert elements at correct position
void pushin(int t){
    if(st.size()==0){
        st.push(t);
        return;
    }
    else{
        int val=st.top();
        st.pop();
        pushin(t);
        st.push(val);
        return;
    }
}
//reverse function
void reverse(){
    if(st.size()==1)return;