Package g1301_1400.s1356_sort_integers_by_the_number_of_1_bits

Class Solution

  • public class Solution
extends Object
    1356 - Sort Integers by The Number of 1 Bits.

    Easy

    You are given an integer array arr. Sort the integers in the array in ascending order by the number of 1’s in their binary representation and in case of two or more integers have the same number of 1’s you have to sort them in ascending order.

    Return the array after sorting it.

    Example 1:

    Input: arr = [0,1,2,3,4,5,6,7,8]

    Output: [0,1,2,4,8,3,5,6,7] Explantion: [0] is the only integer with 0 bits.

    [1,2,4,8] all have 1 bit.

    [3,5,6] have 2 bits.

    [7] has 3 bits.

    The sorted array by bits is [0,1,2,4,8,3,5,6,7]

    Example 2:

    Input: arr = [1024,512,256,128,64,32,16,8,4,2,1]

    Output: [1,2,4,8,16,32,64,128,256,512,1024] Explantion: All integers have 1 bit in the binary representation, you should just sort them in ascending order.

    Constraints:

    • 1 <= arr.length <= 500
    • 0 <= arr[i] <= 104

    • Constructor Detail

      • Solution

        public Solution()

    • Method Detail

      • sortByBits

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