• ← Flatten
• → GatherBy

Gather

WMA link

Gather[list, test]

gathers elements of list into sub lists of items that are the same according to test.

Gather[list]

gathers elements of list into sub lists of items that are the same.

The order of the items inside the sub lists is the same as in the original list.

• • Gather[{1, 7, 3, 7, 2, 3, 9}]

• • Gather[{1/3, 2/6, 1/9}]