Package g1101_1200.s1187_make_array_strictly_increasing

Class Solution

  • public class Solution
extends Object
    1187 - Make Array Strictly Increasing.

    Hard

    Given two integer arrays arr1 and arr2, return the minimum number of operations (possibly zero) needed to make arr1 strictly increasing.

    In one operation, you can choose two indices 0 <= i < arr1.length and 0 <= j < arr2.length and do the assignment arr1[i] = arr2[j].

    If there is no way to make arr1 strictly increasing, return -1.

    Example 1:

    Input: arr1 = [1,5,3,6,7], arr2 = [1,3,2,4]

    Output: 1

    Explanation: Replace 5 with 2, then arr1 = [1, 2, 3, 6, 7].

    Example 2:

    Input: arr1 = [1,5,3,6,7], arr2 = [4,3,1]

    Output: 2

    Explanation: Replace 5 with 3 and then replace 3 with 4. arr1 = [1, 3, 4, 6, 7].

    Example 3:

    Input: arr1 = [1,5,3,6,7], arr2 = [1,6,3,3]

    Output: -1

    Explanation: You can’t make arr1 strictly increasing.

    Constraints:

    • 1 <= arr1.length, arr2.length <= 2000
    • 0 <= arr1[i], arr2[i] <= 10^9

    • Constructor Detail

      • Solution

        public Solution()

    • Method Detail

      • makeArrayIncreasing

        public int makeArrayIncreasing​(int[] arr1,
                               int[] arr2)