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authorYuqian Yang <crupest@crupest.life>2025-02-12 15:55:21 +0800
committerYuqian Yang <crupest@crupest.life>2025-02-12 16:04:50 +0800
commit77e6cdc863d2cbd9df578a665804daf28d8593fe (patch)
tree62c9f3e071d8d1d6fe125fe801907db11784332e /works/solutions/leetcode/cpp/que-shi-de-shu-zi-lcof.cpp
parent10eb95869601e145b1d8bc909424777c25752d51 (diff)
parenta557fa36a22c5ef4a29da596ee1e3aa10be55984 (diff)
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Diffstat (limited to 'works/solutions/leetcode/cpp/que-shi-de-shu-zi-lcof.cpp')
-rw-r--r--works/solutions/leetcode/cpp/que-shi-de-shu-zi-lcof.cpp29
1 files changed, 29 insertions, 0 deletions
diff --git a/works/solutions/leetcode/cpp/que-shi-de-shu-zi-lcof.cpp b/works/solutions/leetcode/cpp/que-shi-de-shu-zi-lcof.cpp
new file mode 100644
index 0000000..1cb3e01
--- /dev/null
+++ b/works/solutions/leetcode/cpp/que-shi-de-shu-zi-lcof.cpp
@@ -0,0 +1,29 @@
+#include <vector>
+
+using std::vector;
+
+class Solution
+{
+public:
+ int missingNumber(vector<int> &nums)
+ {
+ if (nums.back() == nums.size() - 1)
+ return nums.size();
+
+ int low = 0, high = nums.size() - 1;
+ while (low != high)
+ {
+ int middle = (low + high) / 2;
+ if (middle == nums[middle])
+ {
+ low = middle + 1;
+ }
+ else
+ {
+ high = middle;
+ }
+ }
+
+ return low;
+ }
+};