Create 2327-number-of-people-aware-of-a-secret.js

Author: everthis

2327-number-of-people-aware-of-a-secret.js

@@ -0,0 +1,23 @@
+/**
+ * @param {number} n
+ * @param {number} delay
+ * @param {number} forget
+ * @return {number}
+ */
+const peopleAwareOfSecret = function(n, delay, forget) {
+    let cnt = new Array(n+1).fill(0);
+    cnt[1] = 1;
+    let i = 1;
+    let MOD = 1_000_000_007;
+    while (i+delay <= n) {
+        for (let j = i+delay; j <= Math.min(n, i+forget-1); j++) {
+            cnt[j] = (cnt[j]+cnt[i])%MOD;
+        }
+        i++;
+    }
+    let res = 0;
+    for (let j = n; j > n-forget; j--) {
+        res = (res + cnt[j])%MOD;
+    }
+    return res;
+};