class Solution {
public String solution(int[] numbers, String hand) {
String answer = “”;
int leftHand = 10;
int rightHand = 12;
int [][] pad = {
{0,0},{0,1},{0,2},
{1,0},{1,1},{1,2},
{2,0},{2,1},{2,2},
{3,0},{3,1},{3,2}
};
//System.out.println(pad[10][0] + “ “ + pad[10][1]);
for(int i=0;i<numbers.length;i++){
if(numbers[i]==0){
numbers[i]=11;
}else if(numbers[i]%3==1){
leftHand = numbers[i];
}else if(numbers[i]%3==0){
rightHand = numbers[i];
}
int x = pad[numbers[i]-1][0];
int y = pad[numbers[i]-1][1];
int leftx=pad[leftHand-1][0];
int lefty=pad[leftHand-1][1];
int rightx=pad[rightHand-1][0];
int righty=pad[rightHand-1][1];
if( (changeMinus(x-leftx)+changeMinus(y-lefty)) > (changeMinus(x-rightx)+changeMinus(y-righty))){
answer +="R";
rightHand = numbers[i];
}else if( (changeMinus(x-leftx)+changeMinus(y-lefty)) < (changeMinus(x-rightx)+changeMinus(y-righty))){
answer +="L";
leftHand = numbers[i];
System.out.println();
}else{
if(hand.equals("right")){
rightHand = numbers[i];
answer +="R";
}else{
leftHand = numbers[i];
answer +="L";
}
}
// System.out.println(x+ “ “ + y);
}
return answer;
}
public int changeMinus(int a){
if(a<0){
return a*-1;
}else{
return a;
}
} }