Add a couple of exercises

README.md

@@ -2,7 +2,7 @@
 
 :information_source:  This repo contains questions and exercises to learn and practice Python
 
-:bar_chart:  There are currently **60** exercises and questions
+:bar_chart:  There are currently **70** exercises and questions
 
 # Python Exercises
 
@@ -50,13 +50,17 @@
 |Name|Objective & Instructions|Solution|Comments|
 |--------|--------|------|----|
 | 22 times | [Exercise](exercises/hello_world/22_times.md) | | |
+| Variables | [Exercise](exercises/strings/variables.md) | [Solution](solutions/strings/variables.md) | |
 | What is the result? - Level 1 | [Exercise](exercises/strings/what_is_the_result_lvl_1.md) | [Solution](solutions/strings/what_is_the_result_lvl_1.md) | |
 | What is the result? - Level 2 | [Exercise](exercises/strings/what_is_the_result_lvl_2.md) | [Solution](solutions/strings/what_is_the_result_lvl_2.md) | |
 | Starts with a letter | [Exercise](exercises/strings/letter_start.md) | [Solution](solutions/strings/letter_start.md) | |
+| Change Strings | [Exercise](exercises/strings/change_strings.md) | [Solution](solutions/strings/change_strings.md) | |
 | All Digits | [Exercise](exercises/strings/all_digits.md) | [Solution](solutions/strings/all_digits.md) | |
 | Removing Characters | [Exercise](exercises/strings/removing_characters.md) | [Solution](solutions/strings/removing_characters.md) | |
 | Reverse a String | [Exercise](exercises/strings/reverse_string.md) | [Solution](solutions/strings/reverse_string.md) | |
 | Compress Strings | [Exercise](exercises/strings/compress_strings.md) | | |
+| Slicing - Level 1 | [Exercise](exercises/strings/slicing_lvl_1.md) | [Solution](solutions/strings/slicing_lvl_1.md) | |
+| Slicing - Level 2 | [Exercise](exercises/strings/slicing_lvl_2.md) | [Solution](solutions/strings/slicing_lvl_2.md) | |
 
 ## Numbers
 
@@ -68,7 +72,7 @@
 | Bases | [Exercise](exercises/numbers/bases.md) | [Solution](solutions/numbers/bases.md) | |
 | Palindrome | [Exercise](exercises/numbers/palindrome.md) | [Solution](solutions/numbers/palindrome.md) | |
 
-## Lists
+## Lists & Tuples
 
 |Name|Objective & Instructions|Solution|Comments|
 |--------|--------|------|----|
@@ -77,12 +81,17 @@
 | Length | [Exercise](exercises/hello_world/length.md) | | |
 | Min Max | [Exercise](exercises/lists/min_max.md) | [Solution](solutions/lists/min_max.md) | |
 | Three Biggest Items | [Exercise](exercises/lists/three_biggest_items.md) | [Solution](solutions/lists/three_biggest_items.md) | |
-| What is the result? | [Exercise](exercises/lists/what_is_the_result.md) | [Solution](solutions/lists/what_is_the_result.md) | |
+| What is the result? - Level 1 | [Exercise](exercises/lists/what_is_the_result_lvl_1.md) | [Solution](solutions/lists/what_is_the_result_lvl_1.md) | |
+| What is the result? - Level 2 | [Exercise](exercises/lists/what_is_the_result_lvl_2.md) | [Solution](solutions/lists/what_is_the_result_lvl_2.md) | |
 
 ## Loops
 
 |Name|Objective & Instructions|Solution|Comments|
 |--------|--------|------|----|
+| Break Out | [Exercise](exercises/loops/break_out.md) | [Solution](solutions/loops/break_out.md) | |
+| Break Out 2 | [Exercise](exercises/loops/break_out.md) | [Solution](solutions/loops/break_out.md) | |
+| Every character | [Exercise](exercises/loops/every_char.md) | [Solution](solutions/loops/every_char.md) | |
+| Stream of Numbers | [Exercise](exercises/loops/numbers_stream.md) | [Solution](solutions/loops/numbers_stream.md) | |
 | Refactor-1 | [Exercise](exercises/loops/refactor_1.md) | [Solution](solutions/loops/refactor_1.py) | |
 
 ## Functions
@@ -123,7 +132,8 @@
 |Name|Objective & Instructions|Solution|Comments|
 |--------|--------|------|----|
 | Dividing by Zero | [Exercise](exercises/exceptions/divide_by_zero.md) | [Solution](solutions/exceptions/divide_by_zero.md) | |
-| What exception is raised? | [Exercise](exercises/exceptions/what_exception_is_raised.md) | [Solution](solutions/exceptions/what_exception_is_raised.md) | |
+| What exception is raised? - Level 1 | [Exercise](exercises/exceptions/what_exception_is_raised_lvl_1.md) | [Solution](solutions/exceptions/what_exception_is_raised_lvl_1.md) | |
+| What exception is raised? - Level 2 | [Exercise](exercises/exceptions/what_exception_is_raised_lvl_2.md) | [Solution](solutions/exceptions/what_exception_is_raised_lvl_2.md) | |
 
 ## Regex
 

exercises/exceptions/what_exception_is_raised.md → exercises/exceptions/what_exception_is_raised_lvl_1.md

@@ -1,4 +1,4 @@
-## What Exception is Raised?
+## What Exception is Raised? - Level 1
 
 For each of the following statement, specify what exception will be raised
 

exercises/exceptions/what_exception_is_raised_lvl_2.md

@@ -0,0 +1,9 @@
+## What Exception is Raised? - Level 2
+
+For each of the following statement, specify what exception will be raised
+
+1. `chars = "abc";chars[0]='h'`
+
+### Solution
+
+1. TypeError

exercises/lists/what_is_the_result_lvl_1.md

@@ -0,0 +1,15 @@
+## What is the result?
+
+1. What is the result of the following block of code?
+
+```python
+x = ['a', 'b', 'c']
+for i in x:
+    if i == 'b':
+        x = ['z', 'y']
+    print(i)
+```
+
+### Solution
+
+Click [here](solutions/lists/what_is_the_result_lvl_1.md) to view the solution.

exercises/lists/what_is_the_result_lvl_2.md

@@ -0,0 +1,15 @@
+## What is the result? - Level 2
+
+1. What is the result of the following block of code?
+
+```python
+x = ['a', 'b', 'c']
+for i in x:
+    if i == 'b':
+        x = ['z', 'y']
+    print(i)
+```
+
+### Solution
+
+Click [here](solutions/lists//what_is_the_result_lvl_2.md) to view the solution.

exercises/loops/break_out.md

@@ -0,0 +1,7 @@
+## Break Out
+
+Write a loop that will keep reversing user's input until he enters the letter 'q' to quit
+
+## Solution
+
+Click [here](solutions/loops/break_out.md) to view the solution.

exercises/loops/break_out_2.md

@@ -0,0 +1,7 @@
+## Break Out 2
+
+Iterate over a given list of numbers and break out of it if one the numbers is 2 or 4. If you didn't any of these numbers, print a message saying so.
+
+### Solution
+
+Click [here](solutions/loops/break_out_2.md) to view the solution.

exercises/loops/every_char.md

@@ -0,0 +1,7 @@
+## Every Character
+
+Given a variable of a string, print character of the string on its own line.
+
+### Solution
+
+Click [here](solutions/loops/every_char.md) to view the solution.

exercises/loops/numbers_stream.md

@@ -0,0 +1,8 @@
+## Stream of Numbers
+
+1. Print the numbers between 0 and 10
+2. Print the number between 0 and -10
+
+### Solution
+
+Click [here](solutions/loops/numbers_stream.md) to view the solution.

exercises/strings/change_strings.md

@@ -0,0 +1,7 @@
+## Change Strings
+
+Modify the string "cat" to "bat"
+
+### Solution
+
+Click [here](soltuions/strings/change_strings.md) to view the solution.

exercises/strings/slicing_lvl_1.md

@@ -0,0 +1,13 @@
+## Slicing - Level 1
+
+What is the result of each of the following statements if `x = 'abcdefgh'`
+
+1. `x[:]`
+2. `x[2:]`
+3. `x[2:2]`
+4. `x[2:3]`
+5. `x[-1:]`
+
+### Solution
+
+Click [here](solutions/strings/slicing_lvl_1.md) to view the solution.

exercises/strings/slicing_lvl_2.md

@@ -0,0 +1,15 @@
+## Slicing - Level 2
+
+What is the result of each of the following statements if `x = 'abcdefgh'`
+
+1. `x[-1:-2]`
+2. `x[3:-1]`
+3. `x[::1]`
+4. `x[::3]`
+5. `x[1:2:3]`
+6. `x[::-1]`
+7. `x[1::-1]`
+
+### Solution
+
+Click [here](solutions/strings/slicing_lvl_2.md) to view the solution.

exercises/strings/variables.md

@@ -0,0 +1,12 @@
+## Strings & Variables
+
+Using the variable `fruit = "strawberry"` print the following:
+
+1. `Best fruit is: strawberry`
+2. `Yes, strawberry. Only strawberry`
+3. `Hello, my name is Mr. Strawberry`
+4. `fruit = 'strawberry'`
+
+### Solution
+
+Click [here](solutions/strings/variables.md) to view the solution.

solutions/exceptions/what_exception_is_raised.md → solutions/exceptions/what_exception_is_raised_lvl_1.md

@@ -1,4 +1,4 @@
-## What Exception is Raised?
+## What Exception is Raised? - Level 1
 
 For each of the following statement, specify what exception will be raised
 

solutions/exceptions/what_exception_is_raised_lvl_2.md

@@ -0,0 +1,9 @@
+## What Exception is Raised? - Level 2
+
+For each of the following statement, specify what exception will be raised
+
+1. `chars = "abc";chars[0]='h'`
+
+### Solution
+
+1. TypeError

solutions/lists/what_is_the_result_lvl_1.md

@@ -0,0 +1,13 @@
+## What is the result?
+
+1. `'x = 'pizza,';print(x)`
+2. `x = ('pizza',);print(x)`
+3. `x = ('pizza');print(x)`
+4. `x = 'pizza', 'pasta';print(x)`
+
+### Solution
+
+1. `pizza,`
+2. `('pizza')`
+3. `pizza`
+4. `('pizza', 'pasta')`

solutions/lists/what_is_the_result.md → solutions/lists/what_is_the_result_lvl_2.md

@@ -1,4 +1,4 @@
-## What is the result?
+## What is the result? - Level 2
 
 1. What is the result of the following block of code?
 

solutions/loops/break_out.md

@@ -0,0 +1,13 @@
+## Break Out
+
+Write a loop that will keep reversing user's input until he enters the letter 'q' to quit
+
+## Solution
+
+```python
+while True:
+  ans = input("Please insert a string to reverse: ")
+  if ans == 'q':
+      break
+  print(ans[::-1])
+```

solutions/loops/break_out_2.md

@@ -0,0 +1,14 @@
+## Break Out 2
+
+Iterate over a given list of numbers and break out of it if one the numbers is 2 or 4. If you didn't any of these numbers, print a message saying so.
+
+### Solution
+
+```python
+for i in li:
+    if i == 2 or i == 4:
+        print("Found it!")
+        break
+else:
+    print("Didn't find 2 nor 4")
+```

solutions/loops/every_char.md

@@ -0,0 +1,11 @@
+## Every Character
+
+Given a variable of a string, print character of the string on its own line.
+
+### Solution
+
+```python
+string = "python"
+for char in string:
+    print(char)
+````

solutions/loops/numbers_stream.md

@@ -0,0 +1,20 @@
+## Stream of Numbers
+
+1. Print the numbers between 0 and 10
+2. Print the number between 0 and -10
+
+### Solution
+
+1.
+
+```python
+for i in range(0, 11):
+    print(i)
+```
+
+2.
+
+```python
+for i in range (0, -11, -1):
+    print(i)
+```

solutions/strings/change_strings.md

@@ -0,0 +1,7 @@
+## Change Strings
+
+Modify the string "cat" to "bat"
+
+### Soltuion
+
+`"cat".replace("c", "b")` OR `"b" + "cat"[1:]`

solutions/strings/slicing_lvl_1.md

@@ -0,0 +1,17 @@
+## Slicing - Level 1
+
+What is the result of each of the following statements if `x = 'abcdefgh'`
+
+1. `x[:]`
+2. `x[2:]`
+3. `x[2:2]`
+4. `x[2:3]`
+5. `x[-1:]`
+
+### Solution
+
+1. `'abcdefgh'`
+2. `'cdefgh'`
+3. `''`
+4. `'c'`
+5. `'h'`

solutions/strings/slicing_lvl_2.md

@@ -0,0 +1,21 @@
+## Slicing - Level 2
+
+What is the result of each of the following statements if `x = 'abcdefgh'`
+
+1. `x[-1:-2]`
+2. `x[3:-1]`
+3. `x[::1]`
+4. `x[::3]`
+5. `x[1:2:3]`
+6. `x[::-1]`
+7. `x[1::-1]`
+
+### Solution
+
+1. `''`
+2. `'defg'`
+3. `'abcdefgh'`
+4. `'adg'`
+5. `'b'`
+6. `'hgfedcba'`
+7. `'ba'`

solutions/strings/variables.md

@@ -0,0 +1,15 @@
+## Strings & Variables
+
+Using the variable `fruit = "strawberry"` print the following:
+
+1. `Best fruit is: strawberry`
+2. `Yes, strawberry. Only strawberry`
+3. `Hello, my name is Mr. Strawberry`
+4. `fruit = 'strawberry'`
+
+### Solution
+
+1. `print(f'Best fruit is: {fruit}')`
+2. `print(f'Yes, {fruit}. Only {fruit}')`
+3. `print(f'Hello, my name is Mr. {fruit.capitalize()}')`
+4. `print(f'{fruit = }')`  # Supported only using Python 3.8+