- Use Array.prototype.reduce(), Array.prototype.map() and Array.prototype.concat() to produce every possible pair from the elements of the two arrays.
//#Source https://bit.ly/2neWfJ2 const xProd = (a, b) => a.reduce((acc, x) => acc.concat(b.map(y => [x, y])), ); console.log(xProd([1, 2], ['a', 'b'])); console.log(xProd([1, 2], [1, 2])); console.log(xProd(['a', 'b'], ['a', 'b']));
[[1,"a"],[1,"b"],[2,"a"],[2,"b"]] [[1,1],[1,2],[2,1],[2,2]] [["a","a"],["a","b"],["b","a"],["b","b"]]
Improve this sample solution and post your code through Disqus
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
- Weekly Trends
- Python Interview Questions and Answers: Comprehensive Guide
- Scala Exercises, Practice, Solution
- Kotlin Exercises practice with solution
- MongoDB Exercises, Practice, Solution
- SQL Exercises, Practice, Solution - JOINS
- Java Basic Programming Exercises
- SQL Subqueries
- Adventureworks Database Exercises
- C# Sharp Basic Exercises
- SQL COUNT() with distinct
- Java Collection Exercises
- SQL COUNT() function
- SQL Inner Join