Calculate the average of all numbers in a given array? ( solution)ģ4. Multiply two Matrices in Java? ( solution)Ģ5. Add or subtract two Matrices? ( solution)Ģ4.
Perform a binary search in a given array? ( solution)Ģ3. Find multiple missing numbers in a given integer array with duplicates? ( solution)Ģ1. Reverse an array in place in Java? ( solution)Ģ0. Remove duplicates from an array in place? ( solution)ġ9. Sort an integer array in place using the QuickSort algorithm? ( solution)ġ8. Remove duplicates from the given array in Java? ( solution)ġ7. Find duplicate numbers in an array if it contains multiple duplicates? ( solution)ġ6. Find all pairs of integer arrays whose sum is equal to a given number? ( solution)ġ5. The largest and smallest number in an unsorted integer array? ( solution)ġ4. Find the duplicate number on a given integer array? ( solution)ġ3. Find a missing number in a given integer array of 1 to 100? ( solution)ġ2. Here is a list of some of the frequently asked Array and Matrix-based Programming questions:ġ1. lang.ArrayIndexOutOfBoundsException, so beware of that.
You can only access the array using the index, and Java also doesn't valid index check, and if you try to access a display with an invalid index, you will get Java. Still, in Java, an array is again an object, which provides just the length method. Array stores elements in a contiguous memory location, and in C++, you can also access array elements using pointer arithmetic. Next to String is an array, the second most frequently used data structure.
APPLE JAVA CODING QUESTIONS MANUAL
For more advanced questions, I suggest you solve problems given on the Algorithm Design Manual by Steven Skiena, a book with the most challenging algorithm questions. If you can solve all these String questions without any help, then you are in good shape. Check if the given String is Palindrome? ( solution) Check if two String is a rotation of each other? ( solution)ġ2. Reverse words in a given sentence without using any library method? ( solution)ġ1. Find all permutations of String? ( solution)ġ0. Count the occurrence of a given character in String? ( solution)ĩ. Count many vowels and consonants in a given String? ( solution)Ĩ. Find duplicate characters in a String? ( solution)ħ. Check if a String contains only digits? ( solution)Ħ. Reverse a given String using recursion? ( solution)ĥ. Print the first non-repeated character from String? ( solution)Ĥ. Check if two Strings are anagrams of each other? ( solution)ģ. Print duplicate characters from String? ( solution)Ģ. Here is a list of some of the frequently asked String Interview Questions from Coding Interviews:ġ. In this category, you will find questions that require String manipulations, e.g., substring, reversing, searching, sorting, slicing and dicing, etc. From the C++ perspective, String is nothing but a null-terminated character array, but from the Java perspective, String is a full-fledged object backed by a character array. There is hardly an application written in Java and C++ that doesn't use String.
APPLE JAVA CODING QUESTIONS PROFESSIONAL
You will see it right from your programming course, and you will use it throughout your professional project. The String is probably the most used data structure. This way, you can start with the topic you feel most comfortable with and slowly progress to the topic you want to improve. If you need to refresh your knowledge of data structure and algorithms, you can also take help from a good book, our course like Data Structures and Algorithms: Deep Dive Using Java, for quick reference.ġ00+ Data Structures and Algorithm Interview Questions with Solutionįor the sake of clarity and focus, I have categorized these data structure and algorithmic questions into various sub-categories, e.g., String questions, array-based questions, linked list questions, binary tree-related questions, searching and sorting based questions, and bit manipulation questions. If you are familiar with them, then try to solve them by hand and if you do not, then learn about them first and then solve them.
I firmly believe that the interview teaches you a lot in a short time, and that's why I am sharing some frequently asked Data structure and algorithm questions from various Java interviews. As per my experience, there is a direct correlation between a programmer having a good command of the algorithm and being a good developer and coder.
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