Added solution for 2899

Author: chirag64

02899. Last Visited Integers.rs

@@ -0,0 +1,24 @@
+impl Solution {
+    // Create an output vector and a num vector. Num vector will contain list of numbers and a marker variable will keep a track of which was the last 'prev' value that was added in output vector.      
+    pub fn last_visited_integers(words: Vec<String>) -> Vec<i32> {
+        let mut output = Vec::new();
+        let mut nums: Vec<i32> = Vec::new();
+        let mut marker = -1;
+        for word in words {
+            if word == "prev" {
+                if marker > -1 {
+                    let s = nums[marker as usize];
+                    marker -= 1;
+                    output.push(s);
+                } else {
+                    output.push(-1);
+                    marker = -1;
+                }
+            } else {
+                nums.push(word.parse::<i32>().unwrap());
+                marker = (nums.len() as i32) - 1;
+            }
+        }
+        return output;
+    }
+}