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-rw-r--r--other/contains_duplicate2.cpp24
1 files changed, 24 insertions, 0 deletions
diff --git a/other/contains_duplicate2.cpp b/other/contains_duplicate2.cpp
new file mode 100644
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--- /dev/null
+++ b/other/contains_duplicate2.cpp
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+#include "leetcode.h"
+
+class Solution {
+public:
+ bool containsNearbyDuplicate(vector<int> &nums, int k) {
+ unordered_map<int, int> um;
+ for (int i = 0; i < nums.size(); i++) {
+ if (um.count(nums[i]))
+ if (abs(i - um[nums[i]]) <= k)
+ return true;
+ um[nums[i]] = i;
+ }
+ return false;
+ }
+};
+
+int main() {
+ Solution obj;
+ vector<int> nums = {1, 2, 3, 1};
+ if (obj.containsNearbyDuplicate(nums, 3))
+ cout << "true";
+ else
+ cout << "false";
+}