拓展-用循环语句做出趣味图形

Posted 2021-05-20 wl.88888888

拓展-趣味图形

• 1.直线
• 2. 矩形
• 3. 正直角三角
• 4.倒直角三角
• 5.反三角
• 6.等腰三角
• 7.平行四边形
• 8.等腰梯形
• 9.菱形

1.直线

#!/bin/bash
for ((a=1;a<=20;a++))
do
  echo -n "*"
done
  echo ""

2. 矩形

#!/bin/bash

for ((a=1;a<=10;a++))
do
  for ((b=1;b<=15;b++))
  do
  echo -n "*"
  done

 echo ""
done

3. 正直角三角

for：

#!/bin/bash
for ((a=1;a<=9;a++))
do
  for ((b=1;b<=$a;b++))
  do  
  echo -n "*"

  done
 echo ""
done

while：

#!/bin/bash

a=0

while [ $a -le 9 ]
do
   echo -n "*"
b=1
   while [ $b -le $a ]
do
   echo -n "*"
   let b++
done
   echo ""
   let a++
done

4.倒直角三角

for：

#!/bin/bash

for ((a=1;a<=9;a++))
do
  for ((b=9;b>=$a;b--))
  do
  echo -n "*"
  done
 echo ""
done

while：

#!/bin/bash

a=0

while [ $a -le 9 ]
do
b=8
   while [ $b -ge $a ]
   do
    echo -n "*"  
    let b--
   done
    echo -n "*"
    echo ""
    let a++
done

5.反三角

for：

#!/bin/bash


for ((a=1;a<=9;a++))
do
  # 做一个空格倒三角
  for ((b=9;b>=$a;b--))
  do
  echo -n " "
  done
  
 for ((c=1;c<=$a;c++))
 do
 echo -n "*"

 done
echo ""
done

while：

#!/bin/bash

a=0

while [ $a -le 9 ]
do
   b=9
   while [ $b -ge $a ]
   do
   echo -n " "
   let b--
   done
   c=0
   while [ $c -le $a ]
   do
   echo -n "*"
   let c++
   done
   echo  ''
   let a++
done

6.等腰三角

#!/bin/bash

for ((a=1;a<=9;a++))
do
   for ((b=9;b>=$a;b--))
   do
      echo -n " "
   done

   for ((c=1;c<=$[$a*2-1];c++))
   do
      echo -n "*" 
   done
   echo ""
done

7.平行四边形

for:

#!/bin/bash
for ((i=6;i>=1;i--))
do
 for((k=1;k<=i;k++))
 do
   echo -n " "
 done
  for (( j=6;j>=1;j--))
   do
      echo -n "*"
   done
    echo ""
done

while:

#!/bin/bash



a=0

while [ $a -le 9 ]
do
b=9
   while [ $b -ge $a ]
   do
       echo -n " "
       let b--
   done
c=1
   while [ $c -le $a ]
   do
       echo -n "*"
       let c++
   done
d=9
   while [ $d -ge $a ]
   do
       echo -n "*"
       let d--
   done
   echo ""
   let a++
done

8.等腰梯形

for：

#!/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

while：

#!/bin/bash

a=0
while [ $a -le 9 ]
do
b=9
    while [ $b -ge $a ]
    do
        echo -n " "
        let b--
    done
c=1
    while [ $c -le $a ]
    do
         echo -n "*"
         let c++
    done
d=1
    while [ $d -le $a ]
    do
         echo -n "*"
         let d++
    done
e=0
    while [ $e -le 9 ]
    do
         echo -n "*"
         let e++
    done
    echo ""
    let a++
done

9.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 

可调节大小：

#!/bin/bash

read -p "请输入数字: " i

for ((a=1;a<=$i;a++))
do
   for ((b=$i;b>=$a;b--))
   do
       echo -n " "
   done
   for ((c=1;c<=$[2*a-1];c++))
   do
       echo -n "*"
   done
   echo ""
done

for ((d=$i-1;d>=1;d--))
do
    for ((e=$i;e>=$d;e--))
    do
        echo -n " "
    done
    for ((f=$d;f>=1;f--))
    do
    echo -n "*"
    done
    for ((g=$d;g>1;g--))
    do
    echo -n "*"
done
echo ""
done