rust leetcode

rust-leetcode/README.md

@@ -796,5 +796,21 @@ impl Solution {
         }
         true
     }
+    //位运算
+    pub fn is_unique2(astr: String) -> bool {
+        let cs = astr.chars();
+        let mut mark = 0;
+        let mut mark_bit = 0;
+        for c in cs {
+            mark_bit = c as i32 - ('a' as i32);
+            if (mark & (1 << mark_bit)) != 0 {
+                return false;
+            } else {
+                mark |= 1 << mark_bit
+            }
+        }
+        true
+    }
+
 }
 ```
\ No newline at end of file

rust-leetcode/src/Solution.rs

@@ -1088,10 +1088,27 @@ fn interview_01_01() {
             }
             true
         }
+        //位运算
+        pub fn is_unique2(astr: String) -> bool {
+            let cs = astr.chars();
+            let mut mark = 0;
+            let mut mark_bit = 0;
+            for c in cs {
+                mark_bit = c as i32 - ('a' as i32);
+                if (mark & (1 << mark_bit)) != 0 {
+                    return false;
+                } else {
+                    mark |= 1 << mark_bit
+                }
+            }
+            true
+        }
     }
 
     let ret = Solution::is_unique("abc".to_owned());
-    println!("{}", ret)
+    let ret2 = Solution::is_unique2("abc".to_owned());
+    println!("{}", ret);
+    println!("{}", ret2)
 }
 
 ///所有方法调用