for (char c : s.toCharArray()) { chs.add(c); } int balance = 0; for (int i = 0; i < chs.size(); i++) { if (chs.get(i) == '<') { balance++; } else { balance--; } if (balance < 0) { if (maxReplacements <= 0) { return false; } chs.set(i, '<'); balance = 1; maxReplacements--; } } return balance == 0; }

Hi converting the chat array is not working and the return statement in the array list.