20_排序方法1

1.输入一串数字排序

#!/bin/bash

function paixu() {
    arr=($@)
    len=${#arr[@]}
    for ((i = 1; i < len; i++)); do
        for ((j = 0; j < len - i; j++)); do
            for ((m = j + 1; m < len - i + 1; m++)); do
                first=${arr[$j]}
                second=${arr[$m]}
                if [ $first -gt $second ]; then
                    tmp=$first
                    arr[$j]=$second
                    arr[$m]=$tmp
                fi
            done
        done
    done
    echo ${arr[@]}
}

function enter() {
    read -p "请输入一组列表" num
    arr=($num)
    echo "原数组为：" ${arr[@]}
    paixu ${arr[@]}
}

enter

2.输入一串数字排序

#!/bin/bash
function sort_num() {
    read -p "请输入一串数字排序：" nums
    arr=($nums)
    arr1=()

    while [ ${#arr[@]} -ne 0 ]; do
        min=99999
        index=99999
        for i in ${!arr[@]}; do
            if [ ${arr[$i]} -le $min ]; then
                min=${arr[$i]}
                index=$i
            fi
        done
        unset arr[index]
        arr1+=($min)
    done

    echo ${arr1[@]}

}

sort_num