contains duplicate solution

Author: doh6077

contains-duplicate/doh6077.py

@@ -0,0 +1,10 @@
+
+# set에 저장하면서 중복 여부 확인하기
+class Solution:
+    def containsDuplicate(self, nums: list[int]) -> bool:
+        hashset = set()
+        for i in nums:
+            if i in hashset:
+                return True
+            hashset.add(i)
+        return False

two-sum/doh6077.py

@@ -6,4 +6,3 @@ def twoSum(self, nums: list[int], target: int) -> list[int]:
             if diff in prevMap:
                 return [prevMap[diff], i]
             prevMap[n] = i 
-