#Exercise 1
Given the code below, insert the correct negative index on line 3 in order to get the last character in the string.

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print(my_string[])


#Exercise 2
Given the code below, insert the correct positive index on line 3 in order to return the comma character from the string.

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print(my_string[])


#Exercise 3
Given the code below, insert the correct negative index on line 3 in order to return the w character from the string.

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print(my_string[])


#Exercise 4
Given the code below, insert the correct method on line 3 in order to return the index of the B character in the string.

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print(my_string.)


#Exercise 5
Given the code below, insert the correct method on line 3 in order to return the number of occurrences of the letter o in the string.

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print(my_string.)


#Exercise 6
Given the code below, insert the correct method on line 3 in order to convert all letters in the string to uppercase.

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print(my_string.)


#Exercise 7
Given the code below, insert the correct method on line 3 in order to get the index at which the substring Bitcoin starts.

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print(my_string.)


#Exercise 8
Given the code below, insert the correct method on line 3 in order to check of the string starts with the letter X.

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print(my_string.)


#Exercise 9
Given the code below, insert the correct method on line 3 in order to convert all uppercase letters to lowercase and all lowercase letters to uppercase.

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print(my_string.)


#Exercise 10
Given the code below, insert the correct method on line 3 in order to remove all white spaces from the string.

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print(my_string.)


#Exercise 11
Given the code below, insert the correct method on line 3 in order to replace all the occurrences of letter i with the substring btc.

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print(my_string.)


#Exercise 12
Given the code below, insert the correct method on line 3 in order to split the entire string in two parts, using the comma as a delimiter.

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print(my_string.)


#Exercise 13
Given the code below, insert the correct method on line 3 in order to join the characters of the string using the & symbol as a delimiter.

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print()


#Exercise 14
Given the code below, insert the correct code on line 4 in order to concatenate my_string with the following string: my_other_string = "Poor guy!"

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."
my_other_string = "Poor guy!"

print()


#Exercise 15
Given the code below, insert the correct method on line 3 in order to convert the first letter of each word in the string to uppercase.

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print(my_string.)


#Exercise 16
Given the code below, use string formatting with the % operator on line 3 to map the values of 2010, 10k and Bitcoin to the corresponding formatting operators.

my_string = "In %s, someone paid %s %s for two pizzas."

print()


#Exercise 17
Given the code below, use string formatting with the format() method on line 3 to map the values of 2010, 10k and Bitcoin to the corresponding formatting operators.

my_string = "In {}, someone paid {} {} for two pizzas."

print()


#Exercise 18
Given the code below, use slicing and insert the correct code on line 3 in order to return the substring 2010 from the string. Use positive indexes!

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print()


#Exercise 19
Given the code below, use slicing and insert the correct code on line 3 in order to return the substring Bitcoin from the string. Use negative indexes!

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print()


#Exercise 20
Given the code below, use slicing and insert the correct code on line 3 in order to return the first 12 characters in the string. Use a single, positive index!

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print()


#Exercise 21
Given the code below, use slicing and insert the correct code on line 3 in order to return the last 9 characters of the string. Use a single, negative index!

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print()


#Exercise 22
Given the code below, use slicing and insert the correct code on line 3 in order to return the entire string in reversed order.

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print()


#Exercise 23
Given the code below, use slicing and insert the correct code on line 3 in order to return every 7th character of the string, starting with the first character.

The final result should be: I,n top

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print()


#Exercise 24
Given the code below, use slicing and insert the correct code on line 3 in order to return the string except the first 10 characters. Use a single, positive index!

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print()


#Exercise 25
Given the code below, use slicing and insert the correct code on line 3 in order to return the string except the last 4 characters. Use a single, negative index!

my_string = "In 2010, someone paid 10k Bitcoin for two pizzas."

print()