# Get 25 quintessential programming interview problems. Set A PDF

By Rui Ming

This ebook has 25 crucial coding difficulties supplemented by way of C++ ideas excellent for technical interview arrangements for a software program Developer place at tech titans like Google, Microsoft, fb, Apple, Twitter, Amazon or many Silicon Valley startups.

This ebook provides you hand picked 25 necessary coding difficulties (katas) that each software program Developer needs to totally know the way to resolve. the matter set covers uncomplicated info constitution problem(s) (Linked record, Binary Tree, String, Array, HashTable), Bit Manipulations, Sorting, Numerical, Combinatorics and easy algorithms concepts similar to grasping set of rules and Divide-and-Conquer.

Each challenge is observed by means of a operating and concise C++ resolution, non-compulsory illustrations, research and attempt circumstances. we attempt to maintain the suggestions fresh, easy, and concise. also, comparable adaptations to the issues also are supplied for every given challenge. many of the difficulties offered during this e-book require readers to have easy familiarity with algorithms taught in an undergraduate point algorithms classification and a operating wisdom of C++ programming language and simple familiarity with STL library.

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**Additional resources for 25 quintessential programming interview problems. Set A**

**Example text**

Reverse(0x00000005), returns 0x5000000. Solution Maintain two indexes, i and j pointing to the start and end position of the input string respectively. Run a loop swap(input, i, j), increments i and decrements j each time until they meet. size() - 1; while (i < j) { Swap(input, i, j); ++i; --j; } } 2^I . 3^j . 5^k Problem Hamming numbers, also known as ugly numbers and also 5-smooth numbers (numbers whose prime divisors are less or equal to 5), are numbers of the form . The task is to return the k-th hamming number.

The function should print the line count, word count, and character count delimited by tab. Anagrams Given a set of words, return a set of anagrams found in the given collection. For example "The rat fell in the tar" => returned [rat tar]. Requirement: Devise a solution with average complexity O(nk log k) where n is the number of words and k is the average length of the word. Sorting each word requires O(k log k) on average. Hence for n words, the complexity is O(n k log k). Can you think a solution that can give us a better complexity under O(nk log k).

Since a sentinel marks the last node on the previous level, if the queue still has nodes to be processed, insert a new sentinel to the queue to mark the end of the current level and the pattern repeats. push(node->right); } } } } Unix wc (word count) Command Problem Implement unix wc-like command that takes a c-string input. Any character other than white space characters (space, tab, \n, etc), counts as 1 char. A word contains at least a single non white space characters. A line has at least 1 word.

### 25 quintessential programming interview problems. Set A by Rui Ming

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