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authorJack Sangdahl <[email protected]>2025-03-10 00:36:13 -0600
committerJack Sangdahl <[email protected]>2025-03-10 00:36:13 -0600
commit7c60dee83b436e8e8a667bf9f191beced8de4fc3 (patch)
treeeb7a24ee2067f92245c57bb118e85a1baf15df50 /other/k_inverse_pairs.cpp
parent5d7cdc215e4ba1ec4cbb24c084cccb5e5e641468 (diff)
downloadleetcode-7c60dee83b436e8e8a667bf9f191beced8de4fc3.tar.gz
leetcode-7c60dee83b436e8e8a667bf9f191beced8de4fc3.zip
chore: move cpp and rust code to directory
Diffstat (limited to 'other/k_inverse_pairs.cpp')
-rw-r--r--other/k_inverse_pairs.cpp24
1 files changed, 24 insertions, 0 deletions
diff --git a/other/k_inverse_pairs.cpp b/other/k_inverse_pairs.cpp
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+#include "leetcode.h"
+
+class Solution {
+public:
+ int kInversePairs(int n, int k) {
+ vector<int> dp(k + 1, 0);
+ int mod = 1e9 + 7;
+ for (int i = 1; i <= n; i++) {
+ vector<int> tmp(k + 1, 0);
+ tmp[0] = 1;
+ for (int j = 1; j <= k; j++) {
+ long long val = (dp[j] + mod - ((j - i) >= 0 ? dp[j - i] : 0)) % mod;
+ tmp[j] = (tmp[j - 1] + val) % mod;
+ }
+ dp = tmp;
+ }
+ return (dp[k] + mod - (k > 0 ? dp[k - 1] : 0)) % mod;
+ }
+};
+
+int main() {
+ Solution obj;
+ cout << obj.kInversePairs(3, 0);
+}