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-rw-r--r--set_mismatch.cpp19
1 files changed, 19 insertions, 0 deletions
diff --git a/set_mismatch.cpp b/set_mismatch.cpp
new file mode 100644
index 0000000..8c216bc
--- /dev/null
+++ b/set_mismatch.cpp
@@ -0,0 +1,19 @@
+#include "leetcode.h"
+
+class Solution {
+public:
+ vector<int> findErrorNums(vector<int> &nums) {
+ int p = 0, ac1 = 0, ac2 = 0;
+ for (uint i = 0; i < nums.size(); ++i)
+ p ^= (i + 1) ^ nums[i];
+ p &= -p;
+ for (uint i = 0; i < nums.size(); ++i) {
+ ((nums[i] & p) == 0) ? ac1 ^= nums[i] : ac2 ^= nums[i];
+ (((i + 1) & p) == 0) ? ac1 ^= i + 1 : ac2 ^= i + 1;
+ }
+ for (auto n : nums)
+ if (n == ac1)
+ return {ac1, ac2};
+ return {ac2, ac1};
+ }
+};