EXERCISE - 9 FUNCTIONS 


A) Write a function nearly_equal to test whether two strings are nearly equal. 

Two strings a and b are nearly equal when a can be generated by a single 

mutation on b.
B) Write a function dups to find all duplicates in the list.
C) Write a function unique to find all the unique elements of a list.

A) AIM: Write a function nearly_equal to test whether two strings are nearly 

equal. Two strings a and b are nearly equal when a can be generated by a 

single mutation on b.

SOURCE CODE:

def nearly_equal(str1,str2):
    count=0
    i=j=0
    while(i<len(str1) and j<len(str2)):
        if(str1[i]!=str2[j]):
            count=count+1
            if(len(str1)>len(str2)):
                i=i+1
            elif(len(str1)==len(str2)):
                pass
            else:
                i=i-1
        if(count>1):
            return False
        i=i+1
        j=j+1
    if(count<2):
            return True
  
str1=input("Enter first string::\n")
str2=input("Enter second string::\n")
boolean=nearly_equal(str1,str2)
if(boolean):
    print("Strings are nearly equal.")
else:
    print("Strings are not equal.")

OUTPUT:

Enter first string::
RISE
Enter second string::
RISEE
Strings are nearly equal.



B) AIM: Write a function dups to find all duplicates in the list.

SOURCE CODE:

def dups(numlist):
    duplicates={}
    for ele in numlist:
        c=numlist.count(ele)
        if(c>=2):
            duplicates[ele]=c
    print("Duplicate elements are:\n",duplicates)
    return

numlist=[]
n=int(input("Enter number of elements to be insert:\n"))
for i in range(n):
    ele=int(input("Enter element"))
    numlist.append(ele)
dups(numlist)

OUTPUT:

Enter number of elements to be insert:
5
Enter element2
Enter element4
Enter element2
Enter element3
Enter element3
Duplicate elements are:
{2: 2, 3: 2}



C) AIM: Write a function unique to find all the unique elements of a list.

SOURCE CODE:

def unique(numlist):
    uniqueele=[]
    for ele in numlist:
        c=numlist.count(ele)
        if(c==1):
            uniqueele.append(ele)
    print("Unique elements are:\n",uniqueele)
    return

numlist=[]
n=int(input("Enter number of elements to be insert:\n"))
for i in range(n):
    ele=int(input("Enter element"))
    numlist.append(ele)
unique(numlist)

OUTPUT:

Enter number of elements to be insert:
5
Enter element2
Enter element3
Enter element4
Enter element3
Enter element2
Unique elements are:
[4]

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