Create 5959-minimum-operations-to-make-the-array-k-increasing.js

Author: everthis

5959-minimum-operations-to-make-the-array-k-increasing.js

@@ -0,0 +1,45 @@
+/**
+ * @param {number[]} arr
+ * @param {number} k
+ * @return {number}
+ */
+const kIncreasing = function(arr, k) {
+  const n = arr.length
+  const a = Array.from({ length: k }, () => Array())
+  
+  for(let i = 0; i < k; i++) {
+    for(let j = i; j < n; j += k) {
+      a[i].push(arr[j])
+    }
+  }
+  
+  let res = 0
+  for(let i = 0; i < a.length; i++) {
+    const r = a[i]
+    res += r.length - lis(r)
+  }
+  
+  return res
+  
+  function bisect_right(a, x, lo = 0, hi = null) { // > upper_bound
+      if (lo < 0) throw new Error('lo must be non-negative');
+      if (hi == null) hi = a.length;
+      while (lo < hi) {
+          let mid = parseInt((lo + hi) / 2);
+          x < a[mid] ? hi = mid : lo = mid + 1;
+      }
+      return lo;
+  }
+  
+  function lis(ar) {
+    let q = []
+    for (let x of ar) {
+        let i = bisect_right(q, x)
+        if (i == q.length) q.push(x)
+        else q[i] = x      
+    }
+
+    return q.length
+  }
+};
+