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Problem: Find the Kth Largest Integer in the Array

Medium
30 min
Explore how to solve the problem of finding the kth largest integer in an array of strings representing numbers. Learn to apply the top k elements pattern and use heaps for efficient selection, treating duplicates as distinct values. This lesson helps you implement and understand these core coding interview techniques.

Statement

Given an array of strings, nums, where each string represents an integer without leading zeros, and an integer k, your task is to find and return the string representing the kth^{th} largest integer in the array.

Note: Treat duplicate integers as distinct entities. For instance, if nums =[“2”, “3”, “3”]= [\text{\lq\lq2\rq\rq, \lq\lq3\rq\rq, \lq\lq3\rq\rq]}, the first largest integer is “3”\text{\lq\lq3\rq\rq}, the second largest is also “3”\text{\lq\lq3\rq\rq}, and the third largest is “2”\text{\lq\lq2\rq\rq}.

Constraints:

  • 1<=1 <= k <=<= nums.length <=103<= 10^3

  • 1<=1 <= nums[i].length <=100<= 100

  • nums[i] consists of only digits.

  • nums[i] will not have any leading zeros.

Problem
Ask
Submissions

Problem: Find the Kth Largest Integer in the Array

Medium
30 min
Explore how to solve the problem of finding the kth largest integer in an array of strings representing numbers. Learn to apply the top k elements pattern and use heaps for efficient selection, treating duplicates as distinct values. This lesson helps you implement and understand these core coding interview techniques.

Statement

Given an array of strings, nums, where each string represents an integer without leading zeros, and an integer k, your task is to find and return the string representing the kth^{th} largest integer in the array.

Note: Treat duplicate integers as distinct entities. For instance, if nums =[“2”, “3”, “3”]= [\text{\lq\lq2\rq\rq, \lq\lq3\rq\rq, \lq\lq3\rq\rq]}, the first largest integer is “3”\text{\lq\lq3\rq\rq}, the second largest is also “3”\text{\lq\lq3\rq\rq}, and the third largest is “2”\text{\lq\lq2\rq\rq}.

Constraints:

  • 1<=1 <= k <=<= nums.length <=103<= 10^3

  • 1<=1 <= nums[i].length <=100<= 100

  • nums[i] consists of only digits.

  • nums[i] will not have any leading zeros.