Program to accept a number.
Display the reverse of the number.
Input: 123
Output: 321
r=0
n = int(input("Enter a number:"))
while n>0:
d=n%10
r=r*10+d
n=n//10
print("Reverse of the number is",r)
'''
Dry Run
r=0
n=123
123>0,True, d=123%10=3, r=0*10+3=3, n=123//10=12
12>0,True, d=12%10=2, r=3*10+2=32, n=12//10=1
1>0,True, d=1%10=1, r=32*10+1=321, n=1//10=0
0>0,False
Reverse of the number is 321
'''