Browse Curriculum
FAANGPrep Sprint
Hard
Maximum Profit in Job Scheduling
Given n jobs where every job has a start time, end time, and profit, return the maximum profit wihout overlapping jobs.
10 min read
Solve on LeetCodeProblem Understanding
We have jobs (start, end, profit). We want to pick a subset of non-overlapping jobs to maximize total profit.
Example:
- Job 1: [1, 3], Profit 50
- Job 2: [2, 4], Profit 10
- Job 3: [3, 5], Profit 40
- If we pick Job 1, we can't pick Job 2 (overlap). We CAN pick Job 3.
- Total: 90.
Algorithm Strategy
- Sort jobs by End Time.
- Define
dp[i]= Max profit using subset of firstijobs. - For Job
i(indexi-1in sorted list):- Include: Profit
p[i]+dp[index of latest job ending <= start[i]]. - Exclude:
dp[i-1].
- Include: Profit
dp[i] = max(Include, Exclude).- Use Binary Search to efficiently find the "latest non-conflicting job".
Interactive Visualization
Step 1 / 1
Initializing...
1x
Observe the decision process. Sorting by end time allows us to linearize the problem. The visualizer shows finding the previous compatible job (green).
Click 'Randomize' to generate new jobs.
ON THIS PAGE
- Problem Understanding
- Algorithm Strategy
- Interactive Visualization
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