Expand Alphabets
This program takes a string Str as input. The input string contains a sequence of an integer followed by an alphabet. The output must print the alphabets as many times as the related integer on its left.
Input
1a2b
Output
abb
Input
a3r
In this case, the output will be rrr.
If only the input is given in the correct format, the output will be displayed. If the input is incorrect then no output is produced.
Incorrect Input
a3
PROGRAM
Str = input("Enter the input string:")
num = ""
l=len(Str)
i=0
while (i < l):
if (Str[i] >= '0' and Str[i] <= '9'):
while (i < l and Str[i] >= '0' and Str[i] <= '9' ):
num=num+Str[i]
i=i+1
num=int(num)
if (i < l):
while (num > 0):
print(Str[i],end="")
num=num-1
i=i+1
num=""
OUTPUT
Enter the input string:100q2w
qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqww
Enter the input string:a3r
rrr