Leetcode 1524. Number of Sub-arrays With Odd Sum

Count how many subarrays of an integer array have an odd sum; because n can be up to 1e5, this requires an O(n) approach using parity counts of prefix sums to compute pairings and return the result modulo 10^9+7.

Question Timeline

See when this question was last asked and where, including any notes left by other candidates.

Company

Level

Region

Comments

Your account is free and you can post anonymously if you choose.

Hello Interview Premium

Recent interview questions

System Design Guided Practice

Exclusive content

Learn More

Leetcode 1524. Number of Sub-arrays With Odd Sum

Question Timeline

Comments

Questions

Learn

Links

Legal

Contact