A()

Here’s how to use A() function.

A(i)

Description:

Get a member from a sequence.

Syntax:

A (i)

Note:

Get the i^th member from the sequence A.

Parameter:

A	A sequence.
i	A member’s sequence number expression, which starts from 1.

Return value:

Values of members in a sequence

Example:

	A
1	=[1,2,4]
2	=A1(3)	4
3	=["a","b"](1)	"a"

Related functions:

A (p)

A(p)

Description:

Get members of a sequence according to the sequence numbers of members of an integer sequence to create a new sequence.

Syntax:

A(p)

Note:

Here are sequence A whose length is n and the integer sequence p whose length is m. Get members in p and use their values as sequence numbers to get members in A in order to generate a new sequence.

Parameter:

p	An integer sequence; the range of its member values is ≥0 and ≤n. If P is an empty sequence, then return an empty sequence.
A	A sequence whose length is n.

Return value:

Sequence

Example:

	A
1	[a,b,c,d,e,f,g]
2	[1,3,5]
3	=A1(A2)	[a,c,e]
4	[1,3,5,10]
5	=A1(A4)	Report errors, as the index is out-of-bound.
6	=A1([])	[]
7	=A1([1,2,3,3])	[a,b,c,c]

Related function:

A (i)