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Insert

Insert[list, elem, n]
inserts elem at position n in list. If n is negative, the position is counted from the end.

Insert[expr, elem, {i, j, ...}]
inserts elem at position {i, j, ...} in expr.

Insert[expr, elem, {{i₁, j₁, ...}, {i₂, j₂, ...}, ...}]
inserts elem at several positions.

MORE INFORMATION

list can have any head, not necessarily List.

Insert works on SparseArray objects by effectively inserting into the corresponding ordinary lists.

Basic Examples (4)

Insert x to be at position 3:

Insert x to be at position 2 from the end:

Insert x at several positions:

Insert into a 2D array:

Generalizations & Extensions (2)

Applications (1)

Prepend Append Riffle StringInsert Take Drop Delete ReplacePart FlattenAt Position Sequence

Adding, Removing and Modifying List Elements

Manipulating Lists by Their Indices

Elements of Lists

Parts of Expressions

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