American Express vs Yandex Interview Questions
American Express lists 23 LeetCode interview questions while Yandex lists 128. They share 5 problems — 22% of American Express's bank and 4% of Yandex's. Focus on the overlap first, then drill into 18 American Express-only and 123 Yandex-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 5 overlapping problems first. These are the highest-yield questions for candidates interviewing at both American Express and Yandex.
Step 2 — Company-specific depth: Add American Express-specific problems like Minimum Deletions to Make Character Frequencies Unique, Maximum Equal Frequency, Divide an Array Into Subarrays With Minimum Cost II and Yandex-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: American Express skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
5 Shared Questions
High-priority problems to practice for both American Express and Yandex.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Valid Anagram | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Isomorphic Strings | Easy |
Unique to American Express (18)
Problems in American Express's list that do not appear at Yandex.
Unique to Yandex (123)
Problems in Yandex's list that do not appear at American Express.
| Problem | Difficulty |
|---|---|
| Longest Subarray of 1's After Deleting One Element | Medium |
| Summary Ranges | Easy |
| Maximize Distance to Closest Person | Medium |
| Find K Closest Elements | Medium |
| Subarray Sum Equals K | Medium |
| String Compression | Medium |
| Merge Intervals | Medium |
| Valid Palindrome II | Easy |
| Move Zeroes | Easy |
| One Edit Distance | Medium |
| Permutation in String | Medium |
| Line Reflection | Medium |
Frequently Asked Questions
How many LeetCode questions do American Express and Yandex share?
American Express and Yandex share 5 LeetCode interview questions. 18 problems appear only in American Express's list and 123 appear only in Yandex's list.
What topics overlap most between American Express and Yandex?
The most common shared topics between American Express and Yandex are Hash Table (4 shared questions), String (3 shared questions), Array (2 shared questions), Sorting (1 shared questions), Sliding Window (1 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: American Express or Yandex?
American Express has 8 Easy, 12 Medium, and 3 Hard questions. Yandex has 51 Easy, 67 Medium, and 10 Hard questions. American Express has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both American Express and Yandex?
Start with the 5 shared problems since they cover what both companies ask most often. Then add 18 American Express-specific and 20 Yandex-specific questions to round out your prep.