Insert 指令

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Insert[ <List>, <List>, <Position> ]

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Insert[ <Object>, <List>, <Position> ]

目前本页中文说明尚未翻译完成，请先连至英文说明。如果您有权限，请帮忙翻译本页的官方手册。

Insert[Object, List, Position]

Inserts the object in the list at the given position.

范例： Insert[x^2, {1, 2, 3, 4, 5}, 3] places x² at the third position and gives you the list {1, 2, x², 3, 4, 5}.

备注： If the position is a negative number, then the position is counted from the right.

范例： Insert[x^2, {1, 2, 3, 4, 5}, -1] places x² at the end of the list and gives you the list {1, 2, 3, 4, 5, x²}.

Insert[List 1, List 2, Position]

Inserts all elements of list1 in list2 at the given position.

范例： Insert[{11, 12}, {1, 2, 3, 4, 5}, 3] places the elements of list1 at the third (and following) position(s) of list2 and gives you the list {1, 2, 11, 12, 3, 4, 5}.

备注： If the position is a negative number, then the position is counted from the right.

范例： Insert[{11, 12}, {1, 2, 3, 4, 5}, -2] places the elements of list1 at the end of list2 before its last element and gives you {1, 2, 3, 4, 11, 12, 5}.