1. Turn an integer n into a list containing it n times
  2. Bit-Reversal Permutations

  3. The Three 'R's: Reverse, Reorder, Repeat
  4. Maximum run between identical elements
  5. Modular broadcasting

  6. Find arsonist's lullaby
  7. Weighted average - the pressup trend problem
  8. Find the largest and the smallest number in an array
  9. Duck, Duck, Josephus
  10. Surrounded Countries
  11. XOR sort an array

  12. Reverse Array Sum

  13. Fastest to find the joint
  14. Filter out the pseudo-elements!

  15. Same length sub arrays

  16. Detect heat waves

  17. Find the first duplicated element

  18. Implement Tyrant Sort

  19. Increment an Array

  20. Minimally sort a list into a matrix
  21. Find out my number neighbors

  22. Compare the averages of my lists
  23. Consolidate an Array

  24. The Top Ten Elements You Won't BELIEVE Are In This Array

  25. Shortest power set implementation

  26. Will you be my Weaver?

  27. Into how many pieces can you cut this string?

  28. Pick-flatten a list

  29. Create an array with repeated numbers
  30. An Array of Challenges #1: Alternating Arrays
  31. There are two new sheriffs in town – Identifying DJMcMego pairs!
  32. Difference of the square of the sum
  33. Block Rearrangement

  34. The Lonely Islands
  35. Reverse Range Successors

  36. Sort spelled-out serial numbers

  37. Weapons of Math Instruction

  38. Triangle a number!

  39. Determinant of an Integer Matrix

  40. Make Arrays/Lists start at one

  41. Implement Lazy Drop Sort

  42. Running gene crossover algorithm
  43. Lossy Sorting (Implement Dropsort)
  44. Invert a boolean array
  45. Find the longest word in an array

  46. How to print the below format in the fewest bytes?
  47. Limit your numbers by your runs

  48. Get the best of two Arrays

  49. The Woz Monitor

  50. Sort by shuffling blocks

  51. Is there a bump?
  52. Help John watch movies!

  53. Find the binarray!

  54. Implement Takewhile

  55. Xorting an array

  56. Stitch Together a Palindrome from Palindromic Substrings

  57. Rebuild a rectangular array from a corner
  58. Am I an insignificant array?
  59. Random Golf of the Day #1: Shuffle an Array

  60. Random Golf of the Day #8: Shuffle an infinite list
  61. Hollow out an array

  62. Visit and exit an array

  63. Generating a single string with an Oxford comma from a list

  64. 1D Hopping Array Maze

  65. We do tower hopping
  66. The modulo parity party
  67. Reverse a Rubik's Cube Algorithm
  68. The weight of a Zero

  69. Quickly regrouping lists

  70. Is my Matrix Arrowhead?
  71. Visualize Merge Sort

  72. Group these cells!

  73. Don't get your head in a spin!

  74. Wanna See a Card Trick? (Part I)

  75. Selling electricity

  76. Post-determined Array Sorting
  77. John's lost arrays

  78. Generate all square sub-matrices of a given size

  79. Column-wise summation of overlapping slices
  80. Block-diagonal matrix from columns

  81. Skip like a rabbit!
  82. Tell me how to flop
  83. Remove entries from array to sort it and maximize sum of elements
  84. Am I a golfy array?

  85. Circularly moving sum

  86. Reverse columns while preserving shape

  87. Determine if an Array contains something other than 2
  88. Is it true? Ask Jelly!

  89. Rotation summation

  90. Compare Two Lists by Their Maximum
  91. Rotating a 2D Matrix
  92. Enumerate an array, grouping duplicates
  93. Alternatively shift columns and rows of a 2D array
  94. Add an array with itself

  95. Regrowing trees

  96. The tedious array of 7 rules

  97. Find the shortest unique sublist
  98. The forbidden built-in

  99. Compress a sparse matrix
  100. Help me do my washing