import(solutions): Move rust codes into sub dir.

1 files changed, 47 insertions, 0 deletions

diff --git a/works/solutions/rust/src/length_of_longest_substring.rs b/works/solutions/rust/src/length_of_longest_substring.rs
new file mode 100644
index 0000000..cbd5e14
--- /dev/null
+++ b/works/solutions/rust/src/length_of_longest_substring.rs
@@ -0,0 +1,47 @@
+use super::Solution;

+

+impl Solution {

+    pub fn length_of_longest_substring(s: String) -> i32 {

+        let mut map: [i32; std::u8::MAX as usize] = [-1; std::u8::MAX as usize];

+        let mut last_index: i32 = 0;

+        let mut result: i32 = 0;

+        let bytes = s.as_bytes();

+        for (i, c) in bytes.iter().enumerate() {

+            let i = i as i32;

+            let c = *c as usize;

+            let li = map[c];

+            if li >= last_index {

+                last_index = li + 1;

+                map[c] = i;

+            } else {

+                map[c] = i;

+                let length = i - last_index + 1;

+                if length > result {

+                    result = length;

+                }

+            }

+        }

+        result

+    }

+}

+

+#[cfg(test)]

+mod tests {

+    use super::Solution;

+

+    #[test]

+    fn test() {

+        assert_eq!(

+            Solution::length_of_longest_substring("abcabcbb".to_string()),

+            3

+        );

+        assert_eq!(

+            Solution::length_of_longest_substring("bbbbb".to_string()),

+            1

+        );

+        assert_eq!(

+            Solution::length_of_longest_substring("pwwkew".to_string()),

+            3

+        );

+    }

+}