Patterns
backtracking

22 problems

#

Title

Acceptance

Difficulty

1

All Paths for a Sum (medium)
binary tree
tree depth first search
recursion
+1 more

56.9%

Med.

2

binary tree
tree depth first search
recursion
+1 more

24.5%

Med.

3

subsets
backtracking
array
+1 more

60.3%

easy

4

subsets
backtracking
array
+2 more

40.3%

easy

5

backtracking
recursion
subsets
+2 more

58.8%

Med.

6

subsets
backtracking
recursion
+2 more

56.7%

Med.

7

backtracking
recursion
string

27.9%

hard

8

subsets
backtracking
recursion
+2 more

70.3%

hard

9

binary search tree
recursion
dynamic programming
+2 more

30.0%

hard

10

string
recursion
two pointers
+1 more

33.1%

easy

11

dynamic programming
0/1 knapsack
subsets
+3 more

42.8%

Med.

12

0/1 knapsack
dynamic programming
array
+2 more

35.0%

Med.

13

subsets
dynamic programming
0/1 knapsack
+2 more

55.6%

hard

14

backtracking
recursion
array
+2 more

46.3%

Med.

15

depth-first search
backtracking
graph
+2 more

28.6%

Med.

16

backtracking
recursion
subsets
+1 more

36.3%

Med.

17

44.3%

Med.

18

backtracking
recursion
matrix
+2 more

74.3%

hard

19

trie
string
depth-first search
+3 more

35.5%

Med.

20

dynamic programming
array
greedy algorithm
+2 more

20.2%

Med.

21

dynamic programming
recursion
string
+1 more

17.2%

Med.

22

trie
string
depth-first search
+3 more

35.5%

Med.