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authorcrupest <crupest@outlook.com>2020-07-10 23:42:08 +0800
committercrupest <crupest@outlook.com>2020-07-10 23:42:08 +0800
commit200e723d8e6daf7f8318e363cc96843d7807cbe5 (patch)
tree732e5cbe1b343ce001d1f25db2ceaf6fb81e5d71 /works/solutions/cpp/1343.cpp
parent73e72af428db35dd3fb6cfef4b46185d18688db5 (diff)
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import(solutions): Add problem 1343.
Diffstat (limited to 'works/solutions/cpp/1343.cpp')
-rw-r--r--works/solutions/cpp/1343.cpp40
1 files changed, 40 insertions, 0 deletions
diff --git a/works/solutions/cpp/1343.cpp b/works/solutions/cpp/1343.cpp
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+++ b/works/solutions/cpp/1343.cpp
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+#include <vector>
+
+using std::vector;
+
+class Solution
+{
+public:
+ int numOfSubarrays(vector<int> &arr, int k, int threshold)
+ {
+ const auto end = arr.cend();
+ auto iter = arr.cbegin();
+ auto last_iter = arr.cbegin();
+
+ double sum = 0;
+
+ int result = 0;
+
+ for (int i = 0; i < k; i++)
+ {
+ sum += *iter++;
+ }
+
+ while (iter != end)
+ {
+ if (sum / k >= threshold)
+ {
+ result++;
+ }
+ sum -= *last_iter++;
+ sum += *iter++;
+ }
+
+ if (sum / k >= threshold)
+ {
+ result++;
+ }
+
+ return result;
+ }
+};