Create Execution of All Suffix Instructions Staying in a Grid.java

Author: varunu28

Medium/Execution of All Suffix Instructions Staying in a Grid.java

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+class Solution {
+  public int[] executeInstructions(int n, int[] startPos, String s) {
+    int[] result = new int[s.length()];
+    Map<Character, int[]> directionToMovementMap = Map.of(
+        'R', new int[]{0, 1},
+        'L', new int[]{0, -1},
+        'U', new int[]{-1, 0},
+        'D', new int[]{1, 0}
+    );
+    for (int i = 0; i < s.length(); i++) {
+      int startX = startPos[0];
+      int startY = startPos[1];
+      int j = i;
+      for (; j < s.length(); j++) {
+        startX += directionToMovementMap.get(s.charAt(j))[0];
+        startY += directionToMovementMap.get(s.charAt(j))[1];
+        if (startX < 0 || startY < 0 || startX >= n || startY >= n) {
+          break;
+        }
+      }
+      result[i] = j - i;
+    }
+    return result;
+  }
+}