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Majority Element lll
MEDIUM
10 mins
29 upvotes
Arrays
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Majority Element lll

Contributed by
Shrey Pansuria
Medium
yellow-spark
0/80
Avg time to solve 10 mins
Success Rate 90 %
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29 upvotes

Problem Statement

You are given an array ‘ARR’ and another integer number ‘K’. Your task is to find the all elements of ‘ARR’ which occur more than or equals to ‘N/K’ times in ‘ARR’ and ‘N’ is the length of array ‘ARR’.

For example:

Given array ‘ARR = { 1, 2, 3, 3, 3, 3, 4, 4, 4, 1, 2 ,0}’ and ‘K = 4’

Answer is {3, 4} because ‘3’ occurs ‘4’ times and ‘4’ occurs ‘3’ times which is more than or equals to ‘12/ 4 =3’.

Detailed explanation ( Input/output format, Notes, Constraints, Images )
Sample Input 1:
2
8 4
1 1 2 1 2 4 3 4
6 6
1 1 1 2 2 2
Sample Output 1:
1 2 4
1 2
Explanation For Sample Input 1:
Test Case 1:
Given array ‘ARR = { 1, 1, 2, 1, 2, 4, 3, 4 }’ and ‘K = 2’.

Only 1, 2, 4 has frequency more than or equal to ‘N/K' = 8/4= 2.

Test Case 2:
Given array ‘ARR = { 1, 1, 1, 2, 2, 2 }’ and ‘K = 6’.
‘N/K = 6/6 = 1’ so ‘1’ and ‘2’ both have frequency more than ‘1’.
Sample Input 2:
2
9 3
1 1 1 2 2 2 2 2 2
6 6
1 2 1 2 3 4
Sample Output 2:
1 2
1 2 3 4
Explanation For Sample Input 2:
Test Case 1:
Given array ‘ARR = { 1, 1, 1, 2, 2, 2, 2, 2, 2 }’ and ‘K = 3’.

Both 1, 2 has frequency more than or equal to ‘N/K' = 9/3= 3.

Test Case 2:
Given array ‘ARR = { 1, 2, 1, 2, 3, 4 }’ and ‘K = 6’.
‘N/K = 6/6 = 1’ so ‘1’, '2', '3' and ‘4' all have frequency more than ‘1’.
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