ChaitanyaBaweja

num = [1, 2, 3, 4]
double_num = map(lambda x: x + x, num)

print(double_num)

# Output
# [2, 4, 6, 8]

ChaitanyaBaweja

ChaitanyaBaweja

def reverse_string_loop(original_string):
    reversed_string = ""
    for a in original_string:
        # appending characters in reverse
        reversed_string = a + reversed_string
    return reversed_string

original_string = "ABCDE"
print("Original String : ", original_string)
print("Reversed String : ", reverse_string_loop(original_string))

ChaitanyaBaweja

def reverse_string_iterator(original_string):

    reversed_iterator = reversed(original_string)
    reversed_string = "".join(reversed_iterator)

    return reversed_string

original_string = "ABCDE"

print("Original String1 : ", original_string)

ChaitanyaBaweja

def reverse_string(original_string):

    temp_list = list(original_string)
    temp_list.reverse()
    reversed_string = "".join(temp_list)

    return reversed_string

original_string = "ABCDE"
print("Original String : ", original_string)

ChaitanyaBaweja

def recursion_reverse(s):
    # Base Case
    if(len(s)==1):
        return s
    else:
        return recursion_reverse(s[1:]) + s[0]

original_string = "ABCDE"
print("Original String : ", original_string)
print("Reversed String : ", recursion_reverse(original_string))

ChaitanyaBaweja

# Reversing a string using slicing

my_string = "ABCDE"
reversed_string = my_string[::-1]

print(reversed_string)

# Output
# EDCBA

ChaitanyaBaweja

# Multiplying each element in a list by 2

original_list = [1,2,3,4]

new_list = [2*x for x in original_list]

print(new_list)
# [2,4,6,8]

ChaitanyaBaweja

# finding frequency of each element in a list
from collections import Counter

my_list = ['a','a','b','b','b','c','d','d','d','d','d']
count = Counter(my_list) # defining a counter object

print(count) # Of all elements
# Counter({'d': 5, 'b': 3, 'a': 2, 'c': 1})

print(count['b']) # of individual element

ChaitanyaBaweja

my_string = "my name is chaitanya baweja"

# using the title() function of string class
new_string = my_string.title()

print(new_string)

# Output
# My Name Is Chaitanya Baweja