Python program to create a string from two given strings concatenating uncommon characters of the said strings

PROGRAM : 

a = input('Enter a string : ')
b = input('Enter a string : ')
c=''
for i in a:
    if(i not in b):
        c=c+i

for i in b:
    if(i not in a):
        c=c+i
       

print(c)

OUTPUT :

Write a Python program to create two strings from a given string. Create the first string using those character which occurs only once and create the second string which consists of multi-time occurring characters in the said string

PROGRAM:

a = input('Enter a string : ')
dict = {}
c=''
d=''
a=a.rstrip()
for i in a:
    keys = dict.keys()
    if i in keys:
        dict[i] += 1 # insert value in dict and add count
    else:
        dict[i] = 1
     
for (i, j) in zip(dict.values(), dict.keys()):
    if(i>1):
        c=c+j
    else:
        d=d+j
print(c)
print(d)

OUTPUT :

Python program to find the longest common sub-string from two given strings

from difflib import SequenceMatcher

a=input('enter first string : ')
b=input('enter second string : ')

c = SequenceMatcher(None,a,b)
match = c.find_longest_match(0, len(a), 0, len(b))
if (match.size!=0):
    print(a[match.a: match.a + match.size]) 
else:
    print('Longest common sub-string not present') 

Python program to find the first non-repeating character in given string

a = input('Enter a string : ')
char_order = []
ctr = {}
for c in a:
    if c in ctr:
      ctr[c] += 1
    else:
      ctr[c] = 1
      char_order.append(c)
for c in char_order:
    if ctr[c] == 1:
        print(c)
        break