Build Array from Permutation - Leetcode 1920 - Java

Learn how to solve the Leetcode problem of id 1920, whose title is Build Array from Permutation, using the Java programming language.

https://leetcode.com/problems/build-array-from-permutation

The Data Structures and Algorithms (DSA) lesson uses a loop approach to solving the question.

A new array of integers is created with the same length as the given one.

Then a for loop is used to traverse the elements of the array, from the first to the last, using an index variable.

You need to know how to access an array element by its index. In Java primitive array elements can be accessed using square brackets.

You assign the nums of the nums at position i to the corresponding element of the new array.

The time complexity for the solution is O(n) and its space complexity is O(n).

DSA problems are sometimes asked during tech job interviews for positions such as Software Engineer, so you can use the challenge to practice that skill.