Your Dashboard
Interview Coaching
Learn
System Design
ML System Design
Code
Behavioral
Salary Negotiation
Interview Guides
Search
⌘K
Get Premium
Leetcode 3463. Check If Digits Are Equal in String After Operations II
Given a digit string s, repeatedly replace it by the sequence of pairwise sums modulo 10 of adjacent digits until only two digits remain, and determine whether those final two digits are equal; because |s| can be up to 1e5, the solution requires computing the final digits efficiently using the combinatorial (Pascal's triangle / binomial coefficient) weights modulo 10 rather than simulating all reductions.
Question Timeline
See when this question was last asked and where, including any notes left by other candidates.
All Regions
Comments
Hello Interview Premium
Your account is free and you can post anonymously if you choose.