diff options
author | Adam Carpenter <gitlab@53hor.net> | 2019-07-09 15:14:04 -0400 |
---|---|---|
committer | Adam Carpenter <gitlab@53hor.net> | 2019-07-09 15:14:04 -0400 |
commit | 7e8ee5ed9cad6484e9f13f81731b102ced58402e (patch) | |
tree | 5395402ab07bbb5a659dbd68c701e22a1227202f /meap/meap-code/ch1/ch1-hashmap-hashset.rs | |
download | learning-rust-7e8ee5ed9cad6484e9f13f81731b102ced58402e.tar.xz learning-rust-7e8ee5ed9cad6484e9f13f81731b102ced58402e.zip |
Init.
Diffstat (limited to 'meap/meap-code/ch1/ch1-hashmap-hashset.rs')
-rwxr-xr-x | meap/meap-code/ch1/ch1-hashmap-hashset.rs | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/meap/meap-code/ch1/ch1-hashmap-hashset.rs b/meap/meap-code/ch1/ch1-hashmap-hashset.rs new file mode 100755 index 0000000..1fa9229 --- /dev/null +++ b/meap/meap-code/ch1/ch1-hashmap-hashset.rs @@ -0,0 +1,33 @@ +use std::collections::{HashMap, HashSet};
+
+fn main() {
+
+ let input_text = "does this work
+ i dont know
+ how rust works";
+
+ let mut character_counts = HashMap::new();
+
+ let mut n_lines = 0u32;
+
+ for l in input_text.lines() {
+ n_lines = n_lines + 1;
+
+ let mut chars_for_line = HashSet::new();
+
+ for c in l.chars() {
+ if chars_for_line.contains(&c) {
+ continue
+ }
+ let c_count = character_counts.entry(c).or_insert(0u32);
+ *c_count += 1;
+ chars_for_line.insert(c);
+ }
+ }
+
+ for (c, c_count) in &character_counts {
+ if *c_count == n_lines {
+ println!("{}", c);
+ }
+ }
+}
|