[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

dynamic_programming/house_robber.py

@@ -20,33 +20,34 @@
 ###            (3,counter=True)     (3,counter=False)     (counter=True mean 1 is choosen,so avoid 3)
 #                      /                   /       \
 ###        (2,counter=False)            (2,True)  (2,False)
-#  (here 2,False means 1 is choosen, so we avoid 3 and 
+#  (here 2,False means 1 is choosen, so we avoid 3 and
 # as 3 is avoided now again we are free to choose at house 2)
 
 
 ## Note: dp[i][0]=>0 is True and 1 is False in convention.
 def rob(nums):
-    def helper(nums,dp,i,j):
-        if i<0:
+    def helper(nums, dp, i, j):
+        if i < 0:
             return 0
-        if dp[i][j]!=-1:
+        if dp[i][j] != -1:
             return dp[i][j]
-        if j==True:
-            dp[i][0]=helper(nums,dp,i-1,False)
+        if j == True:
+            dp[i][0] = helper(nums, dp, i - 1, False)
             return dp[i][0]
         else:
-            dp[i][1] = max(nums[i] + helper(nums,dp,i-1,True), helper(nums,dp,i-1,False))
+            dp[i][1] = max(
+                nums[i] + helper(nums, dp, i - 1, True), helper(nums, dp, i - 1, False)
+            )
             return dp[i][1]
-    dp=[[-1]*2 for _ in range(0,len(nums))]
-    return helper(nums,dp,len(nums)-1,False)
-    
+
+    dp = [[-1] * 2 for _ in range(0, len(nums))]
+    return helper(nums, dp, len(nums) - 1, False)
+
+
 if __name__ == "__main__":
-    nums=[2,7,9,3,1]
-    if not nums:                 
-        print('The list is empty')
+    nums = [2, 7, 9, 3, 1]
+    if not nums:
+        print("The list is empty")
     else:
-        max_amount=rob(nums)
+        max_amount = rob(nums)
         print(max_amount)
-
-
-