是否可以在bash中爲稀疏數組設置默認值？

Question

舉例來說，如果我有這樣的數組：

SourceFolder[0]="inbound1" 
SourceFolder[1]="inbound2" 
SourceFolder[2]="inbound3" 
SourceFolder[100]="inbound100" 

而且我通過它去：

for i in "${!SourceFolder[@]}" 
do 
echo "SourceFolder: " ${SourceFolder[$i]} 
done 

是否有可能使其返回一些默認值未初始化索引（3-99 ）？

所以，從3到99指標將返回，例如， 「defaultFolder」

Answer 1

#!/usr/bin/env bash 

for i in {0..100}; do 
    SourceFolder["${i}"]="defaultFolder" 
done 

SourceFolder[0]="inbound1" 
SourceFolder[1]="inbound2" 
SourceFolder[2]="inbound3" 
SourceFolder[100]="inbound100" 

for i in "${!SourceFolder[@]}"; do 
    echo "SourceFolder: ${SourceFolder[$i]}" 
done