diff --git a/docs/article/advanced/numpy_exercises_for_data_analysis.md b/docs/article/advanced/numpy_exercises_for_data_analysis.md
index 5dcf2bd..21c455d 100644
--- a/docs/article/advanced/numpy_exercises_for_data_analysis.md
+++ b/docs/article/advanced/numpy_exercises_for_data_analysis.md
@@ -2143,8 +2143,13 @@ a = np.array([1, 3, 7, 1, 2, 6, 0, 1])
 
 ```python
 a = np.array([1, 3, 7, 1, 2, 6, 0, 1])
+#solution1
 doublediff = np.diff(np.sign(np.diff(a)))
 peak_locations = np.where(doublediff == -2)[0] + 1
+
+#solution2
+peak_locations = np.array([i for i in range(1,a.size - 1) if a[i]>a[i-1] and a[i] > a[i+1]])
+
 peak_locations
 # > array([2, 5])
 ```
@@ -2385,4 +2390,4 @@ print(gen_strides(np.arange(15), stride_len=2, window_len=4))
 
 ## 文章出处
 
-由NumPy中文文档翻译，原作者为 machinelearningplus.com，翻译至：[https://www.machinelearningplus.com/python/101-numpy-exercises-python/](https://www.machinelearningplus.com/python/101-numpy-exercises-python/)
\ No newline at end of file
+由NumPy中文文档翻译，原作者为 machinelearningplus.com，翻译至：[https://www.machinelearningplus.com/python/101-numpy-exercises-python/](https://www.machinelearningplus.com/python/101-numpy-exercises-python/)