Sync LeetCode submission - Contains Duplicate (rust)

Author: JMoogs

my-folder/problems/contains_duplicate/solution.rs

@@ -0,0 +1,13 @@
+use std::collections::HashSet;
+impl Solution {
+    pub fn contains_duplicate(nums: Vec<i32>) -> bool {
+        let mut set = HashSet::new();
+
+        for num in nums.into_iter() {
+            if !set.insert(num) {
+                return true;
+            }
+        }
+        return false;
+    }
+}