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Diffstat (limited to 'count_vowels_permutation.cpp')
-rw-r--r-- | count_vowels_permutation.cpp | 30 |
1 files changed, 0 insertions, 30 deletions
diff --git a/count_vowels_permutation.cpp b/count_vowels_permutation.cpp deleted file mode 100644 index 807a1f4..0000000 --- a/count_vowels_permutation.cpp +++ /dev/null @@ -1,30 +0,0 @@ -#include "leetcode.h" -class Solution { -public: - int countVowelPermutation(int n) { - int ans = 0; - memo.resize(n + 1, vector<int>(5, -1)); - for (int i = 0; i < 5; i++) - ans += dp(n, i), ans %= mod; - return ans; - } - -private: - int mod = 1e9 + 7; - vector<vector<int>> relation = {{1}, {0, 2}, {0, 1, 3, 4}, {2, 4}, {0}}, memo; - int dp(int n, int v) { - if (n == 1) - return 1; - if (memo[n][v] != -1) - return memo[n][v]; - memo[n][v] = 0; - for (int &i : relation[v]) - memo[n][v] += dp(n - 1, i), memo[n][v] %= mod; - return memo[n][v]; - } -}; - -int main() { - Solution obj; - cout << obj.countVowelPermutation(1); -} |