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How to Solve Kth Largest Element in a Stream Problem
Master the Kth Largest Element in a Stream LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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LeetCode ProblemKth Largest Element in a Stream
You are part of a university admissions office and need to keep track of the kth highest test score from applicants in real-time. This helps to determine cut-off marks for interviews and admissions dynamically as new applicants submit their scores. You are tasked to implement a class which, for a given integer k, maintains a stream of test scores and continuously returns the kth highest test score after a new score has been submitted. More specifically, we are looking for the kth highest score in the sorted list of all scores. Implement the KthLargest class:
TreeDesignBinary Search TreeHeap (Priority Queue)Binary TreeData Stream
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Problem Breakdown
Understanding the Kth Largest Element in a Stream Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
You are part of a university admissions office and need to keep track of the kth highest test score from applicants in real-time. This helps to determine cut-off marks for interviews and admissions dynamically as new applicants submit their scores. You are tasked to implement a class which, for a given integer k, maintains a stream of test scores and continuously returns the kth highest test score after a new score has been submitted. More specifically, we are looking for the kth highest score in the sorted list of all scores. Implement the KthLargest class:
EasyProblem #703
LeetCodeKth Largest Element in a Stream
Related Topics
TreeDesignBinary Search TreeHeap (Priority Queue)Binary TreeData Stream
How Phantom Code Helps
Get real-time assistance for Kth Largest Element in a Stream problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
["KthLargest", "add", "add", "add", "add", "add"] [[3, [4, 5, 8, 2]], [3], [5], [10], [9], [4]]
Output
[null, 4, 5, 5, 8, 8]
# Example 2
Input
["KthLargest", "add", "add", "add", "add"] [[4, [7, 7, 7, 7, 8, 3]], [2], [10], [9], [9]]
Output
[null, 7, 7, 7, 8]
Constraints
0 <= nums.length <= 104
1 <= k <= nums.length + 1
-104 <= nums[i] <= 104
-104 <= val <= 104
At most 104 calls will be made to add.
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Solve Kth Largest Element in a Stream — You are part of a university admissions office and need to keep track of the kth...
Here's the optimal approach using Tree:
def solve(input):
# Optimal O(n) solution
return result
Time: O(n) | Space: O(n)
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Frequently Asked Questions
Common questions about solving Kth Largest Element in a Stream and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Kth Largest Element in a Stream during interviews?
Phantom Code generates complete solutions instantly with proper complexity analysis, letting you focus on explaining your approach and demonstrating problem-solving skills rather than getting stuck on implementation details during high-pressure situations.
What if the interviewer asks follow-up questions or modifications to problems like Kth Largest Element in a Stream?
Phantom Code adapts in real-time. Screenshot the modified problem or use audio mode to capture the interviewer's follow-up, and get an updated solution within seconds — including edge cases and optimizations.
Can Phantom Code help me communicate my solution for problems like Kth Largest Element in a Stream?
Yes. Phantom Code provides step-by-step approach explanations with 3 progressive thoughts, so you can walk through your solution naturally. It also provides time and space complexity analysis to discuss trade-offs.
How does Phantom Code assist with different programming languages for Kth Largest Element in a Stream type problems?
Phantom Code supports 11 programming languages including Python, Java, C++, JavaScript, TypeScript, Go, Rust, Ruby, Swift, Kotlin, and C#. Set your preferred language and get idiomatic solutions.
What coding mistakes does Phantom Code help me avoid during Kth Largest Element in a Stream interviews?
Phantom Code catches common mistakes like off-by-one errors, missing edge cases, incorrect base conditions, and suboptimal approaches. It provides clean, well-structured code that handles all edge cases.
Is Phantom Code detectable when solving problems like Kth Largest Element in a Stream during live interviews?
No. Phantom Code runs as an invisible desktop overlay that doesn't appear in screen shares, recordings, or proctoring software. It works with Zoom, HackerRank, CodeSignal, CoderPad, and all major platforms.
How does Phantom Code help when I'm struggling with Kth Largest Element in a Stream style questions under pressure?
The AI provides structured guidance: first the approach (what algorithm/data structure to use and why), then the implementation with clean code, and finally complexity analysis. This helps you think clearly even under pressure.
Does Phantom Code work for the coding platforms used in Kth Largest Element in a Stream interviews?
Yes. Phantom Code works with all major coding platforms including LeetCode, HackerRank, CodeSignal, CoderPad, HackerEarth, and any browser-based coding environment.
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