Rearranging & Restructuring Lists

Flatten — flatten out any sequence of levels in a nested list

Partition — partition lists or nested lists into sublists

Join — join lists together at any level

ArrayFlatten ▪ ArrayReshape ▪ FlattenAt ▪ Sequence

Sort — sort lexicographically or with any comparison function

SortBy — sort by the values of a function applied to elements

Reverse — reverse a list at any level

RotateLeft, RotateRight — cyclically rotate lists at any depth

Transpose — transpose any collection of levels

ArrayPad — add padding on each side

Riffle — intersperse additional elements

PadLeft, PadRight — pad lists to be a particular length at any depth

Split — split into runs of identical elements

Gather — gather sublists of identical elements

Union, Tally — enumerate, tally all distinct elements in a list

DeleteDuplicates — delete duplicate elements in a list

Tuples ▪ Subsets ▪ Permutations ▪ RandomSample

SplitBy, GatherBy — split, gather based on values of a function applied to elements

Union ▪ Intersection ▪ Complement

Element-Oriented Operations »

ReplacePart ▪ Take ▪ Drop ▪ Append ▪ AppendTo

• List Manipulation
• Elements of Lists
• Applying Functions to Lists
• Discrete Mathematics
• Sequence Alignment & Comparison