exercise.R

# Exercise 2: `*apply()`

# Create a *list* of 10 random numbers. Use the `runif` function to make a vector of random numbers,
# then use `as.list()` to convert that to a list.


# Use `lapply()` to apply the `round()` function to each number, rounding it to the nearest .1



## Bonus

# Create a variable 'sentence' that has contains a sentence of text (go for something longish).
# Make it lowercase


# Use the `strsplit()` function to split the sentence into vector of letters.
# Hint: split on `""` to split on everything
# Note: this will return a _list_ with 1 element (which is the vector of letters)


# Extract the vector of letters from the resulting list


# Use the `unique()` function to get a vector unique letters


# Define a function CountOccurances that takes in two parameters: a letter and a vector letters.
# The function should return how many times that letter occurs in the vector
# Hint: use a filter!


# Call your CountOccurances() function to see how many times the letter 'e' is in your sentence.


# Use `sapply()` to apply your CountOccurances() function to each unique letter in the vector to determine its frequency!
# Convert the result into a list (using `as.list`).


# Print the resulting list of frequencies