leetcode

commit 52925dd03ae59db213eb728c685491a8b9dea4a4
parent 9c57818fcb6211316f3e8e5a39096ff703fd6a6e
Author: Dimitrije Dobrota <mail@dimitrijedobrota.com>
Date:   Tue,  4 Jul 2023 10:46:50 +0200

Daily Problem

Diffstat:
A
Problems/0137.cpp
 | 
11
+++++++++++
M
README.md
 | 
1
+

2 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/Problems/0137.cpp b/Problems/0137.cpp
@@ -0,0 +1,11 @@
+class Solution {
+public:
+  int singleNumber(const vector<int> &nums) {
+    int mask1 = 0, mask2 = 0;
+    for (int n : nums) {
+      mask1 = (mask1 ^ n) & ~mask2;
+      mask2 = (mask2 ^ n) & ~mask1;
+    }
+    return mask1;
+  }
+};
diff --git a/README.md b/README.md
@@ -144,6 +144,7 @@ for solving problems.
 |  0134  |   Medium   | [Gas Station](Problems/0134.cpp)                                                                 |
 |  0135  |    Hard    | [Candy](Problems/0135.cpp)                                                                       |
 |  0136  |    Easy    | [Single Number](Problems/0136.cpp)                                                               |
+|  0137  |   Medium   | [Single Number II](Problems/0137.cpp)                                                            |
 |  0138  |   Medium   | [Copy List with Random Pointer](Problems/0138.cpp)                                               |
 |  0139  |   Medium   | [Word Break](Problems/0139.cpp)                                                                  |
 |  0141  |    Easy    | [Linked List Cycle](Problems/0141.cpp)                                                           |