diff options
Diffstat (limited to 'unique_num_occurrences.cpp')
-rw-r--r-- | unique_num_occurrences.cpp | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/unique_num_occurrences.cpp b/unique_num_occurrences.cpp new file mode 100644 index 0000000..5c4871f --- /dev/null +++ b/unique_num_occurrences.cpp @@ -0,0 +1,24 @@ +#include "leetcode.h" + +class Solution { +public: + bool uniqueOccurrences(vector<int> &arr) { + short m[2001] = {}; + for (auto n : arr) + ++m[n + 1000]; + sort(begin(m), end(m)); + for (auto i = 1; i < 2001; ++i) + if (m[i] && m[i] == m[i - 1]) + return false; + return true; + } +}; + +int main() { + Solution obj; + vector<int> arr = {1, 2, 2, 1, 1, 3}; + if (obj.uniqueOccurrences(arr)) + cout << "true"; + else + cout << "false"; +} |