Restore progs folder

1 files changed, 17 insertions, 0 deletions

diff --git a/progs/test.py b/progs/test.py
new file mode 100644
index 0000000..718885d
--- /dev/null
+++ b/progs/test.py
@@ -0,0 +1,17 @@
+import math
+from re import f4, r3
+
+from abs import *
+
+
+def find_first_duplicate(nums, x):
+    num_set = set()
+    no_duplicate = -1
+
+    for i in range(len(nums)):
+        if nums[i] in num_set:
+            return nums[i]
+        else:
+            num_set.add(nums[i])
+
+    return no_duplicate