# Problems

1 – 19 of 19
 Problem Title Likes Solvers Difficulty

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

Created by: Doug Hull

26

5605

#### Problem 233. Reverse the vector

Created by: Vishwanathan Iyer

34

9527

#### Problem 5. Triangle Numbers

Created by: Cody Team

Tags math, triangle, nice

109

21892

#### Problem 262. Swap the input arguments

Created by: Steve Eddins

41

7204

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

Created by: Dimitris Kaliakmanis

65

11347

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

Created by: Gnaneswar Nadh satapathi

50

9072

#### Problem 174. Roll the Dice!

Created by: @bmtran (Bryant Tran)

43

6689

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

Created by: Cody Team

149

25799

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

Created by: @bmtran (Bryant Tran)

26

6252

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

Created by: Nichlas

41

7545

#### Problem 7. Column Removal

Created by: Cody Team

118

20702

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

Created by: Doug Hull

41

5999

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

Created by: Jean-Marie Sainthillier

35

5465

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

Created by: Srivardhini

Tags binary, sum

46

5479

#### Problem 33. Create times-tables

Created by: Cody Team

Tags matrices

86

12923

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

Created by: Cody Team

85

15883

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

Created by: Cody Team

109

15630

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

Created by: Binbin Qi

Tags zeros, for, ones

91

6927

#### Problem 23. Finding Perfect Squares

Created by: Cody Team

Tags sets

133

13701

1 – 19 of 19