# Problems

1 – 19 of 19
 Problem Title Likes Solvers Difficulty

#### Problem 641. Make a random, non-repeating vector.

Created by: Doug Hull

35

7448

#### Problem 233. Reverse the vector

Created by: Vishwanathan Iyer

41

11746

#### Problem 262. Swap the input arguments

Created by: Steve Eddins

54

9175

#### Problem 5. Triangle Numbers

Created by: Cody Team

Tags math, triangle, nice

125

24740

#### Problem 189. Sum all integers from 1 to 2^n

Created by: Dimitris Kaliakmanis

78

13338

#### Problem 1702. Maximum value in a matrix

Created by: Gnaneswar Nadh satapathi

66

11824

#### Problem 174. Roll the Dice!

Created by: @bmtran (Bryant Tran)

51

8620

#### Problem 6. Select every other element of a vector

Created by: Cody Team

174

29640

#### Problem 838. Check if number exists in vector

Created by: Nichlas

51

9592

#### Problem 649. Return the first and last characters of a character array

Created by: @bmtran (Bryant Tran)

33

8112

#### Problem 7. Column Removal

Created by: Cody Team

128

22944

#### Problem 645. Getting the indices from a vector

Created by: Doug Hull

52

7888

#### Problem 1087. Magic is simple (for beginners)

Created by: Jean-Marie Sainthillier

47

7337

#### Problem 568. Number of 1s in a binary string

Created by: Srivardhini

Tags binary, sum

54

7289

#### Problem 33. Create times-tables

Created by: Cody Team

Tags matrices

102

15063

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

Created by: Cody Team

99

18253

#### Problem 10. Determine whether a vector is monotonically increasing

Created by: Cody Team

134

18192

#### Problem 1035. Generate a vector like 1,2,2,3,3,3,4,4,4,4

Created by: Binbin Qi

Tags zeros, for, ones

112

9107

#### Problem 23. Finding Perfect Squares

Created by: Cody Team

Tags sets

149

16174

1 – 19 of 19