Package g1301_1400.s1331_rank_transform_of_an_array

Class Solution

  • public class Solution
extends Object
    1331 - Rank Transform of an Array.

    Easy

    Given an array of integers arr, replace each element with its rank.

    The rank represents how large the element is. The rank has the following rules:

    • Rank is an integer starting from 1.
    • The larger the element, the larger the rank. If two elements are equal, their rank must be the same.
    • Rank should be as small as possible.

    Example 1:

    Input: arr = [40,10,20,30]

    Output: [4,1,2,3]

    Explanation: 40 is the largest element. 10 is the smallest. 20 is the second smallest. 30 is the third smallest.

    Example 2:

    Input: arr = [100,100,100]

    Output: [1,1,1]

    Explanation: Same elements share the same rank.

    Example 3:

    Input: arr = [37,12,28,9,100,56,80,5,12]

    Output: [5,3,4,2,8,6,7,1,3]

    Constraints:

    • 0 <= arr.length <= 105
    • -109 <= arr[i] <= 109

    • Constructor Detail

      • Solution

        public Solution()

    • Method Detail

      • arrayRankTransform

        public int[] arrayRankTransform​(int[] arr)