Update 1751-maximum-number-of-events-that-can-be-attended-ii.js

Author: everthis

1751-maximum-number-of-events-that-can-be-attended-ii.js

@@ -1,3 +1,47 @@
+/**
+ * @param {number[][]} events
+ * @param {number} k
+ * @return {number}
+ */
+const maxValue = function (events, k) {
+  // d[i][j] 表示以 events[i]结尾的取最多j个最大值
+  // d[i][j-1],  Math.max( d[m][j-1] + v[i]) for m ending < start[i]
+  events.sort((a, b) => a[1] - b[1])
+  const n = events.length
+  let d = []
+  for (let j = 0; j <= k; j++) {
+    const newD = []
+    for (let i = 0; i < n; i++) {
+      if (j === 0) {
+        newD[i] = 0
+      } else if (j === 1) {
+        newD[i] = events[i][2]
+      } else if (i === 0) {
+        newD[i] = events[i][2]
+      } else {
+        newD[i] = d[i] // 以i结尾最多取j-1次的最大值
+        const v = events[i][2]
+        const start = events[i][0]
+        for (let m = 0; m < i; m++) {
+          if (events[m][1] < start) {
+            if (d[m] + v > newD[i]) {
+              newD[i] = d[m] + v
+            }
+          } else {
+            break
+          }
+        }
+      }
+    }
+    d = [...newD]
+  }
+  return Math.max(...d)
+}
+
+
+// another
+
+
 /**
  * @param {number[][]} events
  * @param {number} k