find local maxima

hands_on/local_maxima/local_maxima.py

@@ -7,9 +7,13 @@ def find_maxima(x):
     Output:
     idx -- list of indices of the local maxima in x
     """
-    return []
+    idx = []
+    for i in range(1, len(x)-1):
+        if (x[i] > x[i-1]) & (x[i] > x[i+1]):
+           idx.append(i)
+    return idx
 
 
 if __name__ == "__main__":
-    x = [1, 2, 3]
+    x = [1, 3, -2, 0, 2, 1]
     print(find_maxima(x))