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Text String Processing Instructions Section 3-33
In this example, three text strings are rearranged in alphabetical order. The
original order is as follows:
D00100: Milk
D00200: Juice
D00300: Beer
When rearranged alphabetically, the order changes as follows: beer, juice,
milk.
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000000
000001
000002
000003
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Address Mnemonic Operand
Text string ABC
Text string ABCText string ABC
Text string ABCD
>$
>$
Milk
Beer
Beer
Milk
Beer
Milk
Alphabetical order
Two text strings beginning with D00100 and D00200 are compared
in ASCII order from lower to higher. If the text string beginning with
D00100 is higher in ASCII order than the one beginning with
D00200, then the position of the two text strings will be reversed.
Two text strings beginning with D00200 and D00300 are compared
in ASCII order from lower to higher. If the text string beginning with
D00200 is higher in ASCII order than the one beginning with
D00300, then the position of the two text strings will be reversed.
Juice
The juice and beer
text strings are
compared and
their positions are
reversed because
J > B.
Juice
The milk and beer
text strings are
compared and
their positions are
reversed because
M > B.
Juice
The milk and juice
text strings are
compared and their
positions are
reversed because
M > J.
D00100: Milk
D00200: Juice
D00300: Beer
In this way, three text strings can be rearranged in alphabetical order.
Text string