From afabed5d35927a5de9a699daa8d50c6a834e8d7a Mon Sep 17 00:00:00 2001
From: Gleb Koval <gleb@koval.net>
Date: Fri, 10 Jun 2022 11:55:17 +0100
Subject: [PATCH] longest-substring-without-repeating-characters

---
 .../sol.rs                                     | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 longest-substring-without-repeating-characters/sol.rs

diff --git a/longest-substring-without-repeating-characters/sol.rs b/longest-substring-without-repeating-characters/sol.rs
new file mode 100644
index 0000000..0570ae1
--- /dev/null
+++ b/longest-substring-without-repeating-characters/sol.rs
@@ -0,0 +1,18 @@
+use std::collections::HashSet;
+
+impl Solution {
+    pub fn length_of_longest_substring(s: String) -> i32 {
+        let bytes = s.as_bytes();
+        let mut exists = HashSet::new();
+        let mut max = 0;
+        let mut p1 = 0;
+        for p2 in 0..s.len() {
+            while !exists.insert(bytes[p2]) {
+                exists.remove(&bytes[p1]);
+                p1 += 1;
+            }
+            max = max.max(exists.len());
+        }
+        max as i32
+    }
+}
\ No newline at end of file