#!/usr/bin/env python
# coding: utf-8

# ### Extra exercices for lecture One

# ## Question 11

# ### 11.0
# 
# The exponentiation operator in python is `**`. You might have seen the `^` character on your calculator. They do the same thing. <br/>
# For example : <br/>
# `2**2 = 4` <br/>
# `3**3 = 27` <br/>
# `25**0.5 = 5` <br/>
# 
# Compute $2^{10}$:

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# ### 11.1
# 
# Write a function `kthDigit` that takes two integer arguments `n` and `k` and returns the k-th digit of  `n` ? <br/>
# For example :<br/>
# `kthDigit(567, 2)` should return `6` <br/>
# `kthDigit(324877, 5)` should return `2` <br/>
# `kthDigit(235468, 1)` should return `8` <br/>

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# ### 11.2
# 
# Write a function `kEdit` that takes three integer arguments `n`, `k`, and `e` with $0 \leq e \leq 9$ that replaces the `k`-th digit of `n` with `e`. <br/>
# 
# Examples : <br/>
# 
# `kEdit(1234, 2, 0)` should return `1204` <br/>
# `kEdit(34578, 3, 1)` should return `34178` <br/>

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# ### 11.3

# An RGB value is three colors that combine to make up one color. Write a function `rgbconvert` that takes in a 9 digit integer `n`, and returns 3 integers that represents each RGB value. 
# 
# Examples: 
# 
# `rgbconvert(255255255)` => 255, 255, 255
# 
# `rgbconvert(132234075)` => 132, 234, 75

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# ## 12

# ### 12.1

# Given this code:
# ```
# x = 12
# y = 5
# z = y
# y = 12
# x = 1
# z = x + y + z
# ```
# what is the value of z? Verify your solution by running the code above.

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# ### 12.2

# Given this code:
# ```
# z = 5 * (12 % 1) / 18
# x = 23 - 14
# y = x * z
# z = 2 * x
# ```
# what is the value of z? Verify your solution by running the code above.

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# ### 12.3

# Given this code:
# ```
# d = 1
# c = d
# b = c
# a = b
# ```
# what is the value of a? Verify your solution by running the code above.

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