Init.

1 files changed, 51 insertions, 0 deletions

diff --git a/rust-book/ownership/src/main.rs b/rust-book/ownership/src/main.rs
new file mode 100755
index 0000000..1684f55
--- /dev/null
+++ b/rust-book/ownership/src/main.rs
@@ -0,0 +1,51 @@
+fn main() {
+    //let words = String::from("hello there world");
+    //let words = "hello there world";
+    //let first = first_word(&words);
+    //let second = second_word(&words);
+    //let last = last_word(&words);
+    //println!("{}\n{}", first, last);
+    let a = [1, 2, 3, 4, 5];
+    let slice = &a[1..4];
+
+    for each in slice {
+        println!("{}", each);
+    }
+}
+
+fn first_word(s: &str) -> &str {
+    let bytes = s.as_bytes();
+
+    for (i, &item) in bytes.iter().enumerate() {
+        if item == b' ' {
+            return &s[..i];
+        }
+    }
+
+    &s
+}
+
+fn second_word(s: &str) -> &str {
+    let bytes = s.as_bytes();
+
+    for (i, &item) in bytes.iter().enumerate() {
+        if item == b' ' {
+            return &s[i + 1..];
+        }
+    }
+
+    &s
+}
+
+fn last_word(s: &str) -> &str {
+    let bytes = s.as_bytes();
+    let mut result = "";
+
+    for (i, &item) in bytes.iter().enumerate() {
+        if item == b' ' {
+            result = &s[i + 1..];
+        }
+    }
+
+    &result
+}