Insert 指令

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Insert[ <List>, <List>, <Position> ]
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Insert[ <Object>, <List>, <Position> ]
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Insert[Object, List, Position]
Inserts the object in the list at the given position.
範例: 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}.
備註: If the position is a negative number, then the position is counted from the right.
範例: 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.
範例: 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}.
備註: If the position is a negative number, then the position is counted from the right.
範例: 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}.
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