FastPrepLongest Increasing Price Subsequence

Longest Increasing Price Subsequence

OpenAI logoOpenAI● MediumNEW GRADOA

Problem statement

You are given an integer array prices containing financial values in chronological order. The values can represent recorded prices or consecutive monthly net profits; net profits may be negative or zero. Return the maximum number of values you can select so that the selected values are strictly increasing.

The problem statement continues
Pro

Examples

Example 1

prices = [10,9,2,5,3,7,101,18]return = 4

One longest strictly increasing subsequence is [2, 3, 7, 18]. Its elements occur in their original order, and its length is 4.

Original screenshot from the interview report
Pro
FastPrep Pro
Reported in 2 OpenAI interviews this week

Unlock this recently reported problem

FastPrep Pro gives you full access to interview problems reported within the last week.

  • Full problem statement and constraints
  • 3 more worked examples, explained
  • Guided hints and editorial
  • Run your code on real test cases
$8.25/month

$99 billed yearly — or $19 month-to-month. Cancel anytime.

Free plan — 2 of 2 free unlocks used this week
See OpenAI hiring insights
CodePython 3
Run and Submit unlock with Pro
FastPrep Pro
Reported in 2 OpenAI interviews this week

Unlock this recently reported problem

FastPrep Pro gives you full access to interview problems reported within the last week.

  • Full problem statement and constraints
  • 3 more worked examples, explained
  • Guided hints and editorial
  • Run your code on real test cases
$8.25/month

$99 billed yearly — or $19 month-to-month. Cancel anytime.

Free plan — 2 of 2 free unlocks used this week