class Solution {
public boolean backspaceCompare(String S, String T) {
Stack<Character> sstack=new Stack<>();
Stack<Character> tstack=new Stack<>();
char c;
for(int i=0;i<S.length();i++){
c=S.charAt(i);
if(c!='#') sstack.push(c);
else if(!sstack.empty()) {
sstack.pop();
}
}
for(int i=0;i<T.length();i++){
c=T.charAt(i);
if(c!='#') tstack.push(c);
else if(!tstack.empty()) {
tstack.pop();
}
}
while(!sstack.empty()&&!tstack.empty()){
if(sstack.pop()!=tstack.pop()) return false;
}
if(sstack.empty()&&tstack.empty()) return true;
else return false;
}
}
class Solution {
public boolean backspaceCompare(
