SL

• Finding position of a specific item in a list
• Find max/min from a list
• Summing/averaging a list
• Counting occurrences of a specific item in list
• Grouping every N items, e.g. by month/week etc
• Bubble sort

HL

• Two-dimensional array algorithms
  • Traversing
  • Transposing
• Binary search
• Stack (3 methods)
• Queue (3 methods)
• Binary tree
  • 3 traversals
  • insert

Other standard algorithms (SL and HL)

• Palindrome: whether an array is the same backwards as forwards
• Rotation in place: Shifting each item in an array n places forwards with elements at the end of the array wrapping round
• Merging sorted arrays into a single sorted array
• Fisher-Yates shuffle: randomizing an array in place