Math.min()map.get(key).equals(n)stack.push(n)/stack.add(n)stack.peek()/stack.top()top does not exist in java- Parse string use
string.charAt(i) - String to integer
Integer.parseInt(n) - For comparison
str1.equals("abc")
Math.min()map.get(key).equals(n)stack.push(n)/stack.add(n)stack.peek()/stack.top() top does not exist in javastring.charAt(i)Integer.parseInt(n)str1.equals("abc")