Arrays Interview Questions

14 real Arrays questions asked in live technical interviews — each with a model answer. Updated weekly.

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Given an array arr[] of n integers and a target value, check if there exists a pair whose sum equals the target.🟡 Medium · Coding · Asked 1×Given a list of strings strs and a list of indices orderInd, rearrange strs according to orderInd and produce a list of tuples where each tuple contains the string and its vowel count.🟢 Easy · Coding · Asked 1×Print all unique pairs of numbers from a list that sum to 20.🟡 Medium · Coding · Asked 1×Define an array of integers and write a function to determine if any two elements sum to a target value of 20.🟡 Medium · Coding · Asked 1×Given a list of integer IDs, return all IDs that appear more than once. Return each duplicate only once, in the order it first becomes a duplicate. Example: [1,2,3,4,2,5,1].🟡 Medium · Coding · Asked 1×Given the array [1,2,3,4,2,5,1], output [2,1]. Write the code to find elements that appear more than once.🟢 Easy · Coding · Asked 1×Find the most occurring element and its frequency in an array.🟡 Medium · Coding · Asked 1×Write a Python program that takes an array of six elements and prints the count of even and odd numbers present.🟢 Easy · Coding · Asked 1×Given two lists, sort the first list and reorder the second list so that the elements remain in corresponding order.🟡 Medium · Coding · Asked 1×Requirement: sort the first list and reorder the second list to keep corresponding values.🟡 Medium · Coding · Asked 1×Write code for a 2D array.🟢 Easy · Coding · Asked 1×Define a 2D array.🟢 Easy · Conceptual · Asked 1×Define a 2D array and then render it.🟡 Medium · Coding · Asked 1×Give the common elements from both datasets.🟡 Medium · Coding · Asked 1×

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