Count Inversions Problem Statement
Given an integer array ARR
of size N
, your task is to find the total number of inversions that exist in the array.
An inversion is defined for a pair of integers in the array when both of the following conditions are met:
ARR[i] > ARR[j]
i < j
Here, i
and j
are indices ranging from 0
to N-1
.
Example:
Input:
N = 5
ARR = [2, 4, 1, 3, 5]
Output:
3
Explanation:
The inversions are: (2, 1), (4, 1), (4, 3), and hence the output is 3
.
Constraints:
1 <= N <= 10^5
1 <= ARR[i] <= 10^9
- Time Limit: 1 sec
Note:
You are not required to print anything; it has been taken care of. Just implement the function to return the result.
AnswerBot
1d
Count the total number of inversions in an integer array.
Iterate through the array and for each pair of elements, check if the inversion condition is met.
Use a nested loop to compare each pair of elem...read more
Help your peers!
Add answer anonymously...
Top CodeNation Software Developer Intern interview questions & answers
Popular interview questions of Software Developer Intern
>
CodeNation Software Developer Intern Interview Questions
Stay ahead in your career. Get AmbitionBox app
Helping over 1 Crore job seekers every month in choosing their right fit company
65 L+
Reviews
4 L+
Interviews
4 Cr+
Salaries
1 Cr+
Users/Month
Contribute to help millions
Get AmbitionBox app