How to Reverse Vowels of a String in C/C++?
Write a function to reverse only the vowels of a string. Example: Given s = “hello”, return “holle”. A vowel is one of the following 10 letters (both uppercase …
The Basic Calculator in C/C++
April 24, 2016
algorithms, c / c++, data structure, leetcode online judge, programming languages
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Implement a basic calculator to evaluate a simple expression string. The expression string contains only non-negative integers, +, -, *, / operators and empty spaces . The integer division …
Dynamic Programming – Integer Break
Dynamic Programming (DP) is one of the very important algorithm in Computer Science. Here is the simplest example of demonstrating the concept of DP if you want to tell …
How to Reverse String in C++?
Write a method that reverses the given input string. Example: Given s = “12345”, return “54321”. STL The C++ STL provides the reverse method that does the job. class …
Last Minute Tips before Phone Interview
Here are some last minute tips before your phone interview. You’ll be coding, real-time. If you don’t have experience of using them – try them out. Coding fluency is …
Combination Algorithm by Iterative Backtracking Algorithm
Given two integers n and k, return all possible combinations of k numbers out of 1 … n. Example: Input: n = 4, k = 2 Output: , , …