Bounded Robot

class Solution {
    public boolean isRobotBounded(String instructions) {
    // robot is bounded if:
    // end position is 0,0
    // OR
    // end direction is not North
    char direction = 'N';
    int x = 0;
    int y = 0;
        for(int i=0; i<instructions.length(); i++){
            if(instructions.charAt(i)=='G'){
                if(direction=='N'){
                    y++;
                }
                  if(direction=='W'){
                    x++;
                }
                  if(direction=='E'){
                    x--;;
                }
                  if(direction=='S'){
                    y--;
                }
            }
            else if(instructions.charAt(i)=='L'){
                  if (direction == 'N') {
                direction = 'W';
            } else if (direction == 'S') {
                direction = 'E';
            } else if (direction == 'W' ){
                direction = 'S';
            } else {
                direction = 'N';
            } 
            }
            else{
                   if (direction == 'N') {
                direction = 'E';
            } else if (direction == 'S') {
                direction = 'W';
            } else if (direction == 'W') {
                direction = 'N';
            } else {
                direction = 'S';
            } 
            }
        }
   
    return (x == 0 && y == 0) || (direction != 'N');

    }
}