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why does this simple script give such a weird output?
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I've just started learning how to use arrays so sorry if the answer is somehow obvious. I made a simple program which i thought would just count normally. The output of this program ended up being not only backwards at first but very strange. the program is:
#!/bin/bash
num=1
declare -A A1
while true
do
A1[$(($num + 1))]=$num
num=$(( $num + 1 ))
e=0
for e in ${A1[@]}
do
echo $e
done
echo "e is $e"
echo "num is $num"
sleep 0.1
done
but it's output was started doing some really weird stuff after 8 as shown here:
1
e is 1
num is 2
2
1
e is 1
num is 3
3
2
1
e is 1
num is 4
4
3
2
1
e is 1
num is 5
5
4
3
2
1
e is 1
num is 6
6
5
4
3
2
1
e is 1
num is 7
7
6
5
4
3
2
1
e is 1
num is 8
8
7
6
5
4
3
2
1
e is 1
num is 9
8
7
6
5
4
3
2
1
9
e is 9
num is 10
8
7
6
5
4
3
2
1
9
10
e is 10
num is 11
8
7
6
5
4
3
2
1
11
9
10
e is 10
num is 12
8
7
6
5
4
3
2
1
11
12
9
10
e is 10
num is 13
8
7
6
5
4
3
2
1
11
12
9
10
13
e is 13
num is 14
8
7
6
5
4
3
2
1
11
12
9
10
13
14
e is 14
num is 15
8
7
6
5
4
3
2
1
11
12
9
10
15
13
14
e is 14
num is 16
8
7
6
5
4
3
2
1
11
12
9
10
15
16
13
14
e is 14
num is 17
8
7
6
5
4
3
2
1
17
11
12
9
10
15
16
13
14
e is 14
num is 18
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
e is 14
num is 19
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
19
e is 19
num is 20
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
20
19
e is 19
num is 21
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
21
20
19
e is 19
num is 22
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
22
21
20
19
e is 19
num is 23
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
23
22
21
20
19
e is 19
num is 24
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
24
23
22
21
20
19
e is 19
num is 25
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
25
24
23
22
21
20
19
e is 19
num is 26
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
e is 19
num is 27
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
27
e is 27
num is 28
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
e is 27
num is 29
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
e is 29
num is 30
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
e is 30
num is 31
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
31
e is 31
num is 32
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
31
32
e is 32
num is 33
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
29
30
31
32
e is 32
num is 34
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
29
30
31
32
e is 32
num is 35
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
29
30
31
32
e is 32
num is 36
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
e is 32
num is 37
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
e is 37
num is 38
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
38
e is 38
num is 39
39
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
38
e is 38
num is 40
^C
can anybody explain this?
command-line bash scripts
asked 30 mins ago
TheRedStormerTheRedStormer
63
add a comment |
I've just started learning how to use arrays so sorry if the answer is somehow obvious. I made a simple program which i thought would just count normally. The output of this program ended up being not only backwards at first but very strange. the program is:
#!/bin/bash
num=1
declare -A A1
while true
do
A1[$(($num + 1))]=$num
num=$(( $num + 1 ))
e=0
for e in ${A1[@]}
do
echo $e
done
echo "e is $e"
echo "num is $num"
sleep 0.1
done
but it's output was started doing some really weird stuff after 8 as shown here:
1
e is 1
num is 2
2
1
e is 1
num is 3
3
2
1
e is 1
num is 4
4
3
2
1
e is 1
num is 5
5
4
3
2
1
e is 1
num is 6
6
5
4
3
2
1
e is 1
num is 7
7
6
5
4
3
2
1
e is 1
num is 8
8
7
6
5
4
3
2
1
e is 1
num is 9
8
7
6
5
4
3
2
1
9
e is 9
num is 10
8
7
6
5
4
3
2
1
9
10
e is 10
num is 11
8
7
6
5
4
3
2
1
11
9
10
e is 10
num is 12
8
7
6
5
4
3
2
1
11
12
9
10
e is 10
num is 13
8
7
6
5
4
3
2
1
11
12
9
10
13
e is 13
num is 14
8
7
6
5
4
3
2
1
11
12
9
10
13
14
e is 14
num is 15
8
7
6
5
4
3
2
1
11
12
9
10
15
13
14
e is 14
num is 16
8
7
6
5
4
3
2
1
11
12
9
10
15
16
13
14
e is 14
num is 17
8
7
6
5
4
3
2
1
17
11
12
9
10
15
16
13
14
e is 14
num is 18
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
e is 14
num is 19
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
19
e is 19
num is 20
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
20
19
e is 19
num is 21
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
21
20
19
e is 19
num is 22
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
22
21
20
19
e is 19
num is 23
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
23
22
21
20
19
e is 19
num is 24
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
24
23
22
21
20
19
e is 19
num is 25
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
25
24
23
22
21
20
19
e is 19
num is 26
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
e is 19
num is 27
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
27
e is 27
num is 28
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
e is 27
num is 29
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
e is 29
num is 30
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
e is 30
num is 31
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
31
e is 31
num is 32
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
31
32
e is 32
num is 33
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
29
30
31
32
e is 32
num is 34
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
29
30
31
32
e is 32
num is 35
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
29
30
31
32
e is 32
num is 36
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
e is 32
num is 37
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
e is 37
num is 38
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
38
e is 38
num is 39
39
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
38
e is 38
num is 40
^C
can anybody explain this?
command-line bash scripts
asked 30 mins ago
TheRedStormerTheRedStormer
63
You're iterating on associative array keys. Associative arrays aren't necessarily sorted.
– Sergiy Kolodyazhnyy
12 mins ago
add a comment |
I've just started learning how to use arrays so sorry if the answer is somehow obvious. I made a simple program which i thought would just count normally. The output of this program ended up being not only backwards at first but very strange. the program is:
#!/bin/bash
num=1
declare -A A1
while true
do
A1[$(($num + 1))]=$num
num=$(( $num + 1 ))
e=0
for e in ${A1[@]}
do
echo $e
done
echo "e is $e"
echo "num is $num"
sleep 0.1
done
but it's output was started doing some really weird stuff after 8 as shown here:
1
e is 1
num is 2
2
1
e is 1
num is 3
3
2
1
e is 1
num is 4
4
3
2
1
e is 1
num is 5
5
4
3
2
1
e is 1
num is 6
6
5
4
3
2
1
e is 1
num is 7
7
6
5
4
3
2
1
e is 1
num is 8
8
7
6
5
4
3
2
1
e is 1
num is 9
8
7
6
5
4
3
2
1
9
e is 9
num is 10
8
7
6
5
4
3
2
1
9
10
e is 10
num is 11
8
7
6
5
4
3
2
1
11
9
10
e is 10
num is 12
8
7
6
5
4
3
2
1
11
12
9
10
e is 10
num is 13
8
7
6
5
4
3
2
1
11
12
9
10
13
e is 13
num is 14
8
7
6
5
4
3
2
1
11
12
9
10
13
14
e is 14
num is 15
8
7
6
5
4
3
2
1
11
12
9
10
15
13
14
e is 14
num is 16
8
7
6
5
4
3
2
1
11
12
9
10
15
16
13
14
e is 14
num is 17
8
7
6
5
4
3
2
1
17
11
12
9
10
15
16
13
14
e is 14
num is 18
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
e is 14
num is 19
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
19
e is 19
num is 20
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
20
19
e is 19
num is 21
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
21
20
19
e is 19
num is 22
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
22
21
20
19
e is 19
num is 23
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
23
22
21
20
19
e is 19
num is 24
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
24
23
22
21
20
19
e is 19
num is 25
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
25
24
23
22
21
20
19
e is 19
num is 26
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
e is 19
num is 27
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
27
e is 27
num is 28
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
e is 27
num is 29
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
e is 29
num is 30
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
e is 30
num is 31
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
31
e is 31
num is 32
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
31
32
e is 32
num is 33
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
29
30
31
32
e is 32
num is 34
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
29
30
31
32
e is 32
num is 35
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
29
30
31
32
e is 32
num is 36
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
e is 32
num is 37
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
e is 37
num is 38
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
38
e is 38
num is 39
39
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
38
e is 38
num is 40
^C
can anybody explain this?
command-line bash scripts
asked 30 mins ago
TheRedStormerTheRedStormer
63
I've just started learning how to use arrays so sorry if the answer is somehow obvious. I made a simple program which i thought would just count normally. The output of this program ended up being not only backwards at first but very strange. the program is:
#!/bin/bash
num=1
declare -A A1
while true
do
A1[$(($num + 1))]=$num
num=$(( $num + 1 ))
e=0
for e in ${A1[@]}
do
echo $e
done
echo "e is $e"
echo "num is $num"
sleep 0.1
done
but it's output was started doing some really weird stuff after 8 as shown here:
1
e is 1
num is 2
2
1
e is 1
num is 3
3
2
1
e is 1
num is 4
4
3
2
1
e is 1
num is 5
5
4
3
2
1
e is 1
num is 6
6
5
4
3
2
1
e is 1
num is 7
7
6
5
4
3
2
1
e is 1
num is 8
8
7
6
5
4
3
2
1
e is 1
num is 9
8
7
6
5
4
3
2
1
9
e is 9
num is 10
8
7
6
5
4
3
2
1
9
10
e is 10
num is 11
8
7
6
5
4
3
2
1
11
9
10
e is 10
num is 12
8
7
6
5
4
3
2
1
11
12
9
10
e is 10
num is 13
8
7
6
5
4
3
2
1
11
12
9
10
13
e is 13
num is 14
8
7
6
5
4
3
2
1
11
12
9
10
13
14
e is 14
num is 15
8
7
6
5
4
3
2
1
11
12
9
10
15
13
14
e is 14
num is 16
8
7
6
5
4
3
2
1
11
12
9
10
15
16
13
14
e is 14
num is 17
8
7
6
5
4
3
2
1
17
11
12
9
10
15
16
13
14
e is 14
num is 18
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
e is 14
num is 19
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
19
e is 19
num is 20
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
20
19
e is 19
num is 21
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
21
20
19
e is 19
num is 22
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
22
21
20
19
e is 19
num is 23
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
23
22
21
20
19
e is 19
num is 24
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
24
23
22
21
20
19
e is 19
num is 25
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
25
24
23
22
21
20
19
e is 19
num is 26
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
e is 19
num is 27
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
27
e is 27
num is 28
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
e is 27
num is 29
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
e is 29
num is 30
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
e is 30
num is 31
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
31
e is 31
num is 32
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
31
32
e is 32
num is 33
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
29
30
31
32
e is 32
num is 34
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
29
30
31
32
e is 32
num is 35
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
29
30
31
32
e is 32
num is 36
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
e is 32
num is 37
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
e is 37
num is 38
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
38
e is 38
num is 39
39
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
38
e is 38
num is 40
^C
can anybody explain this?
command-line bash scripts
command-line bash scripts
asked 30 mins ago
TheRedStormerTheRedStormer
63
asked 30 mins ago
TheRedStormerTheRedStormer
63
edited 17 mins ago
TheRedStormer
asked 30 mins ago
TheRedStormerTheRedStormer
63
asked 30 mins ago
TheRedStormerTheRedStormer
63
asked 30 mins ago
TheRedStormerTheRedStormer
63
63
You're iterating on associative array keys. Associative arrays aren't necessarily sorted.
– Sergiy Kolodyazhnyy
12 mins ago
add a comment |
You're iterating on associative array keys. Associative arrays aren't necessarily sorted.
– Sergiy Kolodyazhnyy
12 mins ago
You're iterating on associative array keys. Associative arrays aren't necessarily sorted.
– Sergiy Kolodyazhnyy
12 mins ago
You're iterating on associative array keys. Associative arrays aren't necessarily sorted.
– Sergiy Kolodyazhnyy
12 mins ago
add a comment |
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You're iterating on associative array keys. Associative arrays aren't necessarily sorted.
– Sergiy Kolodyazhnyy
12 mins ago