Adding solution for 682

Author: chirag64

00682. Baseball Game.rs

@@ -0,0 +1,27 @@
+impl Solution {
+    // Loop through ops, follow the instructions in a if-else blocks to create a final vec. Then loop through the final vec to calculate the result sum
+    pub fn cal_points(ops: Vec<String>) -> i32 {
+        let mut final_vec = Vec::new();
+        let mut sum = 0;
+        
+        for op in ops {
+            let len = final_vec.len();
+            
+            if op == "C" {
+                final_vec.pop();
+            } else if op == "D" {
+                final_vec.push(final_vec[len - 1] * 2);
+            } else if op == "+" {
+                final_vec.push(final_vec[len - 1] + final_vec[len - 2]);
+            } else {
+                final_vec.push(op.parse::<i32>().unwrap());
+            }
+        }
+        
+        for num in final_vec {
+            sum += num;
+        }
+        
+        return sum;
+    }
+}