Java Coding Practice

Solve Count Factor Pairs using Java Language

Solve Count Factor Pairs using Java to enhance your skills with java coding practice , master coding concepts, and prepare for interviews with practical exercises and detailed solutions.

Count Factor Pairs

Difficulty : Easy

Categories :

  • Mathematics

Given an array of positive integers arr, find the count of factor pairs for each number. A factor pair of a number n is a pair (a,b) where a * b = n. Order matters in the pair, so (a,b) and (b,a) are considered different if a ≠ b.

Constraints:

  • 1 ≤ arr.length ≤ 10^4
  • 1 ≤ arr[i] ≤ 10^5
  • Return results in the same order as input array

Examples:

Input: arr = [12,8]
Output: [6,4]
Explanation: 
For 12, factor pairs are: (1,12), (12,1), (2,6), (6,2), (3,4), (4,3)
For 8, factor pairs are: (1,8), (8,1), (2,4), (4,2)
Input: arr = [16,7,9]
Output: [5,2,3]
Explanation:
For 16: (1,16), (16,1), (2,8), (8,2), (4,4)
For 7: (1,7), (7,1)
For 9: (1,9), (9,1), (3,3)

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Arrays A collection of elements stored in contiguous memory locations, allowing efficient random access and manipulation.

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