Remove unneeded pub

exercises/18_iterators/iterators2.rs

@@ -4,7 +4,7 @@
 // Step 1.
 // Complete the `capitalize_first` function.
 // "hello" -> "Hello"
-pub fn capitalize_first(input: &str) -> String {
+fn capitalize_first(input: &str) -> String {
     let mut c = input.chars();
     match c.next() {
         None => String::new(),
@@ -16,7 +16,7 @@ pub fn capitalize_first(input: &str) -> String {
 // Apply the `capitalize_first` function to a slice of string slices.
 // Return a vector of strings.
 // ["hello", "world"] -> ["Hello", "World"]
-pub fn capitalize_words_vector(words: &[&str]) -> Vec<String> {
+fn capitalize_words_vector(words: &[&str]) -> Vec<String> {
     vec![]
 }
 
@@ -24,7 +24,7 @@ pub fn capitalize_words_vector(words: &[&str]) -> Vec<String> {
 // Apply the `capitalize_first` function again to a slice of string slices.
 // Return a single string.
 // ["hello", " ", "world"] -> "Hello World"
-pub fn capitalize_words_string(words: &[&str]) -> String {
+fn capitalize_words_string(words: &[&str]) -> String {
     String::new()
 }
 

exercises/18_iterators/iterators3.rs

@@ -5,20 +5,20 @@
 //    list_of_results functions.
 
 #[derive(Debug, PartialEq, Eq)]
-pub enum DivisionError {
+enum DivisionError {
     NotDivisible(NotDivisibleError),
     DivideByZero,
 }
 
 #[derive(Debug, PartialEq, Eq)]
-pub struct NotDivisibleError {
+struct NotDivisibleError {
     dividend: i32,
     divisor: i32,
 }
 
 // Calculate `a` divided by `b` if `a` is evenly divisible by `b`.
 // Otherwise, return a suitable error.
-pub fn divide(a: i32, b: i32) -> Result<i32, DivisionError> {
+fn divide(a: i32, b: i32) -> Result<i32, DivisionError> {
     todo!();
 }
 

exercises/18_iterators/iterators4.rs

@@ -1,4 +1,4 @@
-pub fn factorial(num: u64) -> u64 {
+fn factorial(num: u64) -> u64 {
     // Complete this function to return the factorial of num
     // Do not use:
     // - early returns (using the `return` keyword explicitly)