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  • shell脚本练习

    三角形

    #!/bin/bash
    #等腰直角三角形
    read -p "please input the length(等腰直角三角形): " n
    for i in `seq 1 $n`
    do 
        for ((j=$n;j>i;j--))
        do 
            echo -n " "
        done
    
        for m in `seq 1 $i`
        do 
            echo -n "* "
        done
        echo
    done 
    
    #倒直角三角形
    read -p "please input the length(倒直角三角形): " len
    for i in `seq 1 $len`
    do 
        for j in `seq $i $len`
        do 
            echo -n "* "
        done
        echo 
    done
    
    #直角三角形
    read -p "please input the length(直角三角形): " len
    for i in `seq 1 $len`
    do 
        for ((j=1;j<=$i;j++))
        do 
            echo -n "* "
        done
        echo
    done
    
    #菱形
    read -p "please input the length(菱形): " n
    for i in `seq 1 $n`
    do 
        for ((j=$n;j>i;j--))
        do 
            echo -n " "
        done
        for m in `seq 1 $i` 
        do
            echo -n "* "
        done
        echo
    done 
    
    for i in `seq 1 $n`
    do 
        for ((j=1;j<=$i;j++))
        do 
        echo -n " "
        done
        for ((k=$i;k<=$len-1;k++))
        do
            echo -n "* "
        done
        echo 
    done 
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  • 原文地址:https://www.cnblogs.com/daisyyang/p/11483770.html
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