# Problems

1 – 19 of 19
 Problem Title Likes Solvers Difficulty

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

Created by: Doug Hull

31

6167

#### Problem 233. Reverse the vector

Created by: Vishwanathan Iyer

37

10207

#### Problem 262. Swap the input arguments

Created by: Steve Eddins

46

7822

#### Problem 5. Triangle Numbers

Created by: Cody Team

Tags math, triangle, nice

114

22795

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

Created by: Dimitris Kaliakmanis

70

11911

60

9933

#### Problem 174. Roll the Dice!

Created by: @bmtran (Bryant Tran)

46

7290

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

Created by: Cody Team

161

27023

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

Created by: Nichlas

45

8148

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

Created by: @bmtran (Bryant Tran)

30

6832

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

Created by: Doug Hull

45

6581

#### Problem 7. Column Removal

Created by: Cody Team

123

21389

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

Created by: Jean-Marie Sainthillier

37

6031

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

Created by: Srivardhini

Tags binary, sum

52

6036

#### Problem 33. Create times-tables

Created by: Cody Team

Tags matrices

92

13570

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

Created by: Cody Team

89

16556

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

Created by: Cody Team

115

16336

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

Created by: Binbin Qi

Tags zeros, for, ones

100

7610

#### Problem 23. Finding Perfect Squares

Created by: Cody Team

Tags sets

139

14508

1 – 19 of 19