文章目錄
shell腳本多重循環小實驗
一、99乘法表
#!/bin/bash
for ((a=1;a<=9;a++))
do
for ((b=1;b<=$a;b++))
do
c=$[$a*$b]
echo -n -e "$a*$b=$c\t"
done
echo ""
done
二、矩形
#!/bin/bash
for ((a=1;a<=5;a++))
do
for ((b=1;b<=10;b++))
do
echo -n "*"
done
echo ""
done
三、直線
#!/bin/bash
for ((a=1;a<=15;a++))
do
echo -n "*"
done
echo ""
四、正直角三角形
#!/bin/bash
for ((a=1;a<=9;a++))
do
for ((b=1;b<=$a;b++))
do
echo -n "*"
done
echo ""
done
五、反直角三角形
1、 空格矩形加三角
#!/bin/bash
for ((a=1;a<=9;a++))
do
for ((b=1;b<=10;b++))
do
echo -n " "
done
for ((c=1;c<=$a;c++))
do
echo -n "*"
done
echo ""
done
2、空格倒三角加三角
#!/bin/bash
for ((a=1;a<=9;a++))
do
for ((b=9;b>=$a;b--))
do
echo -n " "
done
for ((c=1;c<=$a;c++))
do
echo -n "*"
done
echo ""
done
六、倒直角三角形
#!/bin/bash
for ((a=1;a<=9;a++))
do
for ((b=9;b>=$a;b--))
do
echo -n "*"
done
echo ""
done
七、等腰直角三角形
1、算法計算 $a*2-1
#!/bin/bash
for ((a=1;a<=9;a++))
do
for ((b=9;b>=$a;b--))
do
echo -n " "
done
for ((c=1;c<=$[$a*2-1];c++))
do
echo -n "*"
done
echo ""
done
2、三角加小三角
#!/bin/bash
for ((a=1;a<=9;a++))
do
for ((b=9;b>=$a;b--))
do
echo -n " "
done
for ((c=1;c<=$a;c++))
do
echo -n "*"
done
for ((d=2;d<=$a;d++))
do
echo -n "*"
done
echo ""
done
八、等腰梯形
#!/bin/bash
for ((a=1;a<=9;a++))
do
for ((b=9;b>=$a;b--))
do
echo -n " "
done
for ((c=1;c<=9;c++))
do
echo -n "*"
done
for ((d=1;d<=$[$a*2-1];d++))
do
echo -n "*"
done
echo ""
done
九、菱形
#!/bin/bash
for ((a=1;a<=9;a++))
do
for ((b=9;b>=$a;b--))
do
echo -n " "
done
for ((c=1;c<=$[$a*2-1];c++))
do
echo -n "*"
done
echo ""
done
for ((d=1;d<=10;d++))
do
for ((e=2;e<=$d;e++))
do
echo -n " "
done
for ((f=10;f>=$d;f--))
do
echo -n "*"
done
for ((g=9;g>=$d;g--))
do
echo -n "*"
done
echo ""
done
十、可調節大小菱形
#!/bin/bash
read -p "輸入大小" i
for ((a=1;a<=$i;a++))
do
for ((b=$i;b>=$a;b--))
do
echo -n " "
done
for ((c=1;c<=$[$a*2-1];c++))
do
echo -n "*"
done
echo ""
done
for ((d=1;d<=$i+1;d++))
do
for ((e=1;e<=$d-1;e++))
do
echo -n " "
done
for ((f=2*$i+1;f>=$[$d*2-1];f--))
do
echo -n "*"
done
echo ""
done