# Problems

1 – 21 of 21
 Problem Title Likes Solvers Difficulty

#### Problem 51820. Count unique orderings of vertices of a polygon

Created by: ChrisR

1

16

4

69

#### Problem 51466. List prime anagrams of a number

Created by: ChrisR

1

18

Created by: 埃博拉酱

1

17

#### Problem 2394. Permutation

Created by: Kumar Sandeep

0

40

#### Problem 1649. Magic - Faro Shuffle

Created by: Richard Zapor

2

15

#### Problem 46037. Count alternating permutations

Created by: ChrisR

1

8

#### Problem 55280. Count estrangements

Created by: ChrisR

1

5

#### Problem 986. Penny Flipping: Reverse subsets of a sequence of coins until you recover the original configuration

Created by: Everett Rubel

2

13

#### Problem 19. Swap the first and last columns

Created by: Cody Team

99

18221

#### Problem 154. Reverse Boggle

Created by: @bmtran (Bryant Tran)

3

35

#### Problem 1393. A (wrong) place for everything, and everything in its (wrong) place

Created by: James

2

50

Created by: G K

3

32

#### Problem 2324. GJam 2014 Rd 1c: Train Cars

Created by: Richard Zapor

1

8

#### Problem 2325. GJam 2014 Rd 1c: Reordering Train Cars (Large)

Created by: Richard Zapor

1

2

#### Problem 56250. Counting Permutations

Created by: Dyuman Joshi

1

6

#### Problem 51451. Guess the card in Fitch Cheney’s five-card trick

Created by: ChrisR

0

3

#### Problem 51461. Pass the cards in Fitch Cheney's five-card trick

Created by: ChrisR

0

1

#### Problem 892. Solve Rubik's Cube - Up to Two Face Moves

Created by: Richard Zapor

1

5

#### Problem 604. Next lexicographic - permutation

Created by: Muthu Annamalai

2

49

#### Problem 1388. Numbered lottery balls into cells

Created by: James

1

37

1 – 21 of 21