Sorting
Putting a list of
items in order, either
numerically or alphabeti
cally
Sort key
The field to
be used in the ordering
158
Chapter 6
Problem Solving and Algorithm Design
we are going to translate the algorithm. We discuss the languages into
which algorithms are translated in the next chapter. For this example, let’s
assume that the level of detail is sufficient for this module.
So now, we go back to the second level 0 module:
Fill in missing data
.
The algorithm must go through each of the names and determine whether
any data is missing. If data is missing, the user must be prompted to enter
the missing data. We express this process by using the word
If
with an
expression in parentheses. If the expression is true, the indented process is
carried out; if the expression is not true, the indented process is skipped.
So we must check each of the four data items to see if data is missing.
How does the algorithm determine if a data item is missing? That’s not
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 Fall '10
 MARIANAKANT
 Collation, 7digit, press return.

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