1.Write a program to add space between the strings.
txt = "TodayIsFriday"
first = True
for letter in txt:
if letter>='A' and letter<='Z':
if first==True:
first = False
else:
print(' ',end='')
print(letter,end='')
Today Is Friday
2.Write a program to remove space between the strings.
txt = " Today Is Friday"
for letter in txt:
if letter==' ':
pass
else:
print(letter,end='')
TodayIsFriday
3.Write a program to remove space in the left side of the string:
ltrim()-to remove any leading whitespace or specified characters from the left side of a string.
txt = " Today Is Friday"
alphabet = False
for letter in txt:
if letter==' ' and alphabet==False:
pass
else:
alphabet = True
print(letter,end='')
Today Is Friday
4.Write a program to remove space in the right side of the string:
rtrim()-to remove any leading whitespace or specified characters from the right side of a string.
txt = "Today Is Friday "
alphabet = False
i = len(txt)-1
while i>=0:
letter = txt[i]
if letter==' ' and alphabet == False:
pass
else:
alphabet = True
end = i
j = 0
while j<=end:
print(txt[j],end='')
j+=1
break
i-=1
Today Is Friday
5.Write a program to remove unwanted space from the given string:
txt = "Today Is Friday"
i = 0
while i<len(txt):
if txt[i] != ' ':
print(txt[i],end='')
else:
if txt[i-1]!=' ':
print(txt[i],end='')
i+=1
Today Is Friday
Recursion:
Function calling itself.
what is function?
Set if instructions with a name for achieving a specific task.
Looping-Iterative approach.
Recursion-Recursive approach.
Example:
def display(no):
print(no, end=' ')
no+=1
if no<=5:
display(no)
display(1)
1 2 3 4 5
Write a factorial program using recursion:
def find_fact(no):
if no==1:
return 1
return no * find_fact(no-1)
result = find_fact(4)
print(result)
24
Task:
Write a program to remove unwanted space from the given string:
strip()-Removes all white space characters from the start and end of the string.
txt = " Today Is Friday "
first=True
for letter in txt:
if letter==" ":
pass
else:
if letter>='A' and letter<='Z':
if first==True:
first = False
else:
print(' ',end='')
print(letter,end='')
Today Is Friday
Write a program to given number in reverse order using recursion:
def reverse_number(num,reverse=0):
if num==0:
return reverse
return reverse_number(num//10,reverse*10+num%10)
num=int(input("Enter the number:"))
print(reverse_number(num))
Enter the number:123
321
Write a program to find the given number is palindrome or not using recursion:
def palindrome(num,count=0):
if num==0:
return count
return palindrome(num//10,count*10+num%10)
num=int(input("Enter the number:"))
result=palindrome(num)
if result==num:
print("Palindrome")
else:
print("Not palindrome")
Enter the number:1221
Palindrome
Enter the number:56878
Not palindrome
Write a program to find fibonacci number using recursion:
def find_fibonacci(first_num,sec_num,no):
if first_num > no:
return
print(first_num, end=" ")
find_fibonacci(sec_num,first_num+sec_num,no)
no = int(input("Enter the number: "))
find_fibonacci(0,1,no)
0 1 1 2 3 5 8
write a program to find prime number using recursion:
def find_prime(no,div=2):
if div<no:
if no%div == 0:
return False
div+=1
return find_prime(no,div)
else:
return True
no = int(input("Enter no. "))
print(find_prime(no))
Enter no. 12
False
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