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How to Solve Maximum Length of Pair Chain Problem
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Medium#646
LeetCode ProblemMaximum Length of Pair Chain
You are given an array of n pairs pairs where pairs[i] = [lefti, righti] and lefti < righti. A pair p2 = [c, d] follows a pair p1 = [a, b] if b < c. A chain of pairs can be formed in this fashion. Return the length longest chain which can be formed. You do not need to use up all the given intervals. You can select pairs in any order.
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Problem Breakdown
Understanding the Maximum Length of Pair Chain Problem
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Problem Statement
You are given an array of n pairs pairs where pairs[i] = [lefti, righti] and lefti < righti. A pair p2 = [c, d] follows a pair p1 = [a, b] if b < c. A chain of pairs can be formed in this fashion. Return the length longest chain which can be formed. You do not need to use up all the given intervals. You can select pairs in any order.
MediumProblem #646
LeetCodeMaximum Length of Pair Chain
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Examples
# Example 1
Input
pairs = [[1,2],[2,3],[3,4]]
Output
2
# Example 2
Input
pairs = [[1,2],[7,8],[4,5]]
Output
3
Constraints
n == pairs.length
1 <= n <= 1000
-1000 <= lefti < righti <= 1000
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Solve Maximum Length of Pair Chain — You are given an array of n pairs pairs where pairs[i] = [lefti, righti] and lef...
Here's the optimal approach using Array:
def solve(input):
# Optimal O(n) solution
return result
Time: O(n) | Space: O(n)
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Common questions about solving Maximum Length of Pair Chain and using PhantomCodeAI during coding interviews.
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