[root@nfs_server scripts]# cat yanghuisanjiao.sh
#!/bin/bash
read -t 30 -p “please input the num:” a
printf “%”$a”s\n” 1
for ((i=2;i<=$a;i++))
do
((b=$a-$i))
s=1
printf “%”$b”s”
echo -n “1 ”
for ((j=1;j<=$i-2;j++))
do
((d=$i-$j))
((e=$d*$s))
((s=$e/$j))
echo -n “$s ”
done
echo “1 ”
done
[root@nfs_server scripts]# sh yanghuisanjiao.sh
please input the num:5
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
[root@nfs_server scripts]# sh yanghuisanjiao.sh
please input the num:10
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 10 5 1
1 6 15 20 15 6 1
1 7 21 35 35 21 7 1
1 8 28 56 70 56 28 8 1
1 9 36 84 126 126 84 36 9 1
原文链接：杨辉三角–脚本，转载请注明来源！