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08-22-2007
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Array inside an array
hi All,
I have a array as follows, array1=("xx" "abc" "def" "xyz") and each array1[index] is also storing some array values, like array1[1]=abc and abc=("a" "b" "c") etcetera etcetra......... Note : each subarray under array1 have index 3 i.e. it can max contain 3 values if i echo ${abc[index]} [ where index is 1,2,3...] it works fine. but if i loop thru it's not printing the values, can anybody help me solving this thru loop, my loop goes like this cnt=1 total_Array=${#array1[*]} no_loop_thru=${#abc[*]} while [ $cnt -lt $total_Array ] do srch_fld=`echo ${array1[$cnt]}` j=1 while [ $j -le $no_loop_thru ] do #var1=`$srch_fld[$j]` #echo ${var1} echo ${srch_fld[$j]} j=`expr $j + 1` done cnt=`expr $cnt + 1` done can anybody suggest any improvement on this......LOOP 
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08-22-2007
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Code:
$ cat arrayloop
#! /usr/local/bin/bash
abc=(a b c)
def=(d e f)
ghi=(g h i)
array1=(abc def ghi)
cnt=0
total_Array=${#array1[*]}
no_loop_thru=${#abc[*]}
while [ $cnt -lt $total_Array ] ; do
srch_fld=${array1[$cnt]}
j=0
while [ $j -le $no_loop_thru ] ; do
eval var1=\${$srch_fld[$j]}
echo ${var1}
((j=j+1))
done
((cnt=cnt+1))
done
exit 0
$ ./arrayloop
a
b
c
d
e
f
g
h
i
$
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08-23-2007
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Quote:
hey i got alternative method as follows, while [ $j -le $no_loop_thru ] ; do var1=$srch_fld[$j] echo ${!var1} ((j=j+1)) done
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08-23-2007
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The question remains same, but now the representation changed,
let abc=(a b c) def=(d e f) ghi=(g h i) array1=(abc def ghi) now thing is in sub array i know the content or size, let here it is 3 so i want my o/p should come like abc(1)=a def(1)=d ghi(1)=g then abc(2)=b def(2)=e ghi(2)=h etcetera etcetera....... can anybody help me out to achieve it ?????
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08-23-2007
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The first element of an array is 0, not 1.
var1=$srch_fld[$j] echo "${srch_fld}(${j}) = ${!var1}" will give you the correct indices. If you want to pretend that the first index is 1, you could use: echo "${srch_fld}($((j+1))) = ${!var1}"
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06-10-2008
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Modifying the code from Perderabo, how would you handle different-sized arrays in the inner while loop? For example, let's change the code to be:
Code:
$ cat arrayloop
#! /usr/local/bin/bash
abc=(a b c x y)
def=(d e f z)
ghi=(g h i)
array1=(abc def ghi)
cnt=0
total_Array=${#array1[*]}
while [ $cnt -lt $total_Array ] ; do
srch_fld=${array1[$cnt]}
j=0
while [ $j -le <????> ] ; do
eval var1=\${$srch_fld[$j]}
echo ${var1}
((j=j+1))
done
((cnt=cnt+1))
done
exit 0
$ ./arrayloop
a
b
c
x
y
d
e
f
z
g
h
i
$
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