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  • Coding · System Design · Behavioral
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Google›Software Engineer›Coding Round00:24:17

1. Two Sum

Easy

Given an array of integers nums and an integer target, return the indices of the two numbers that add up to target.

Input: nums = [2,7,11,15], target = 9
Output: [0,1]
Hint 1 readyHint 2Hint 3
JavaScript
function twoSum(nums, target) {
  const seen = new Map();
  // Write your code here
}
Case 1 passed
Case 2 passed
× Case 3 failed
Correctness80%
Time complexity70%

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Welcome back 👋
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Google · SDE II
Overall readiness
Coding84%
System Design71%
Behavioral62%
Communication74%
Today's practice
LRU Cache (Coding)30 min
URL Shortener (System Design)45 min
Leadership question (Behavioral)20 min
Weak areas
System Design
Database scaling
Behavioral
Quantifying impact
DSA
Graph traversal
Communication
Jumping to implementation
Recommended next
  1. 1. Read the Databases & Scaling lesson
  2. 2. Solve 2 graph problems
  3. 3. Practice a STAR behavioral question
  4. 4. Complete one system design session

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