9 processing arrays

1. % Often advantageous for a user to store several
values for the same variable in the internal
memory of the computer because it decrease:
processing time.

% This multiple storage means there has to bel
more than one memory location in the|
computer for each variable name.

% When more than one memory location ¡sf
designated for a single variable, it is called
an array.

2. $ When using dynamic arrays, the programmer
designates the number of array locations as
variable, which can be expanded or contract ed!
during the execution of the solution.

% Because computers are zero-based, for
counting purposes, many programming]
languages are also zero-based.

4. Variable
Reference
Name
AGE(1)
AGE(2)
AGE(3)

AGE(4)

AGE(6)

AGE(7)

AGE(8)

AGE(S)

The number in the
parentheses refers
tothe box number
in the array, the
‘element number.

5. 9
3
E
&

6. Algorithm Flowchart

LOOP:R = 1 TO N STEP

[extn ao

LOOP-END:R

7. 1h ¿Ri="0)
2. REPEAT

R = R+1
ENTER A(R)

UNTIL A(R) =

*3. N= R-1

8. -R=1
. ENTER A(R)
. WHILE A(R) <>

R= RH

ENTER A(R)

WHILE — END

9. LOOP: R=1 TO N STEP 1
[Erınr A(R)

LOOP-END: R

R= Bement number

10. LOOP:R = 1 TO N STEP 1

[Sum = sum + am)

LOOP-END: R

Number of elements
lement number

Sum of the
elements of A
Rh element of the

11. locations associated with a single memory variable|
name and designated by row and column numbers.

12. You load a two-
dimensional array

with nested loops.
The data are
normally loaded
row by row. When|
you load the data
row by row, the|
outer loop
representsthe row,
and the inner loop
represents the
column

13. E

15. LOOP:R = 1 TO NR STEP 1

LOOP: C = 1 TO NC STEP 1

JA(R,NC + 1,
+ A(R,C)

JA(NR + 1,0)
+ A(R,C)

A(R,NC + 1)
A(NR + 1,C
LOOP-END: C

A(NR + 1,NC + 1) =

A(NR + 1, NC + 1
+A(R, NC + 1)

16. In some cases there is a need for arrays with a third or|
leven a fourth dimension. These arrays are called]
multidimensional arrays.

Advanta

# Facilitate an

understanding
of the data

# Improve the
readability of

17. value in a table. A one-dimensional array would be used if the]
element number can be utilized as the given value. A two-
dimensional array with two columns would be used if the element
number cannot be utilized.

coment igor Lowen:

ENTER MONTH
2 DAYS OF THE MONTH =
Days MONTE)

3 PRINT DA