Remove undesirable output on runnint tests

Fixed keon#377

Author: danghai

algorithms/backtrack/subsets.py

@@ -57,8 +57,3 @@ def subsets_v2(self, nums):
     for num in sorted(nums):
         res += [item+[num] for item in res]
     return res
-
-
-test = [1, 2, 3]
-print(test)
-print(subsets(test))

algorithms/backtrack/subsets_unique.py

@@ -35,8 +35,3 @@ def backtrack(res, nums, stack, pos):
     res = set()
     backtrack(res, nums, [], 0)
     return list(res)
-
-
-test = [1, 2, 2]
-print(test)
-print(subsets_unique(test))

algorithms/bfs/shortest_distance_from_all_buildings.py

@@ -38,6 +38,3 @@ def bfs(grid, matrix, i, j, count):
                 matrix[k][l][0] += step+1
                 matrix[k][l][1] = count+1
                 q.append((k, l, step+1))
-
-grid = [[1,0,2,0,1],[0,0,0,0,0],[0,0,1,0,0]]
-print(shortest_distance(grid))