72 lines
1.4 KiB
Bash
72 lines
1.4 KiB
Bash
#!/usr/bin/env bash
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# 声明数组
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## 声明数组方式一
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animals[0]=Cat
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animals[1]=Dog
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animals[2]=Fish
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## 声明数组方式二
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colors=(Red Green Blue)
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# 根据下标获取数组中的元素
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echo "=========== 根据下标获取数组中的元素 ==========="
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echo "\${colors[1]} : " ${colors[1]}
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# 输出：
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# ${colors[1]} : Green
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# 数组切片
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echo "=========== 数组切片 ==========="
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colors[1]="Dark Green"
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echo "\${colors[*]} : "
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printf "+ %s\n" ${colors[*]}
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# 输出：
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# + Red
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# + Dark
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# + Green
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# + Blue
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echo "\"\${colors[*]}\" : "
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printf "+ %s\n" "${colors[*]}"
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# 输出：
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# + Red Dark Green Blue
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echo "\"\${colors[@]}\" : "
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printf "+ %s\n" "${colors[@]}"
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# 输出：
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# + Red
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# + Dark
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# + Green
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# + Blue
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echo "\"\${colors[@]:0:2}\" : " ${colors[@]:0:2} ### Red Dark Green
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# 向数组中添加元素
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echo "=========== 向数组中添加元素 ==========="
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colors=(Yellow "${colors[@]}" Pink Black)
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echo "\"\${colors[@]}\" : " ${colors[@]}
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# 输出：
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# Yellow Red Dark Green Blue Pink Black
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# 向数组中删除元素
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echo "=========== 向数组中删除元素 ==========="
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unset colors[0]
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echo "\"\${colors[@]}\" : " ${colors[@]}
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# 输出：
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# Red Dark Green Blue Pink Black
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# 获取数组的长度
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echo "=========== 获取数组的长度 ==========="
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## 获取数组的长度方式一
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echo "\${#colors[*]} : ${#colors[*]}"
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## 获取数组的长度方式二
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echo "\${#colors[@]} : ${#colors[@]}"
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for (( i = 0; i < animals; i ++ )); do
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echo $i
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done
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