上代码
q1:
#!/bin/bash
for i in 1 2 3 4 5 6 7 8 9
do
for j in 1 2 3 4 5 6 7 8 9
do
echo -ne "$i*$j=$[$i*$j]\t "
done
echo ""
done
q2:
#!/bin/bash
for i in 1 2 3 4 5 6 7 8 9
do
for j in 1 2 3 4 5 6 7 8 9
do
if [ $i -le $j ]
then
echo -ne "$i*$j=$[$i*$j]\t "
fi
done
echo ""
done
q3:
#!/bin/bash
for i in 1 2 3 4 5 6 7 8 9
do
for j in 1 2 3 4 5 6 7 8 9
do
if [ $i -ge $j ]
then
echo -ne "$i*$j=$[$i*$j]\t "
fi
done
echo ""
done
q4:
#!/bin/bash
k=9
for i in 1 2 3 4 5 6 7 8 9
do
j=1
while [ $j -lt $i ]
do
echo -e " \c"
j=`expr $j + 1`
done
while [ $j -lt 10 ]
do
sum=`expr $i \* $j`
echo -e "$i*$j=${sum} \c"
j=`expr $j + 1`
done
echo " "
done
q5:
#!/bin/bash
k=9
for i in 1 2 3 4 5 6 7 8 9
do
j=1
while [ $j -lt $k ]
do
echo -e " \c"
j=`expr $j + 1`
done
while [ $j -lt 10 ]
do
l=`expr 10 - $j`
sum=`expr $i \* $l`
echo -e "$i*$l=${sum} \c"
j=`expr $j + 1`
done
k=`expr $k - 1`
echo " "
done