Create Last Visited Integers.java

Author: varunu28

Easy/Last Visited Integers.java

@@ -0,0 +1,17 @@
+class Solution {
+    public List<Integer> lastVisitedIntegers(List<String> words) {
+        List<Integer> result = new ArrayList<>();
+        List<Integer> numbers = new ArrayList<>();
+        int cursor = -1;
+        for (String word : words) {
+            if (word.equals("prev")) {
+                result.add(cursor == -1 ? -1 : numbers.get(cursor));
+                cursor = cursor == -1 ? -1 : (cursor - 1);
+            } else {
+                numbers.add(Integer.parseInt(word));
+                cursor = numbers.size() - 1;
+            }
+        }
+        return result;
+    }
+}