fix:两数之和

14_刷题/problem_solving_01.py

+from typing import List
+
+class Solution:
+
+    def twoSum(self, nums: List[int], target: int) -> List[int]:
+        """
+        两数之和
+        :param nums: 提供的数组
+        :param target: 目标值
+        :return: 返回值
+        """
+        hashmap = {}  # 字典不可以重复
+        for index, num in enumerate(nums):  # enumerate迭代返回index和value
+            hashmap[num] = index  # 解决value重复的问题
+
+        print(hashmap)
+        for i, num in enumerate(nums):
+            j = hashmap.get(target - num)
+            if j is not None and i != j:
+                return [i, j]
+
+
+if __name__ == '__main__':
+    s = Solution()
+    li = s.twoSum([2, 7, 11, 15], 9)
+    print(li)