The ultimate guide to recursion interviews! Gain a structured approach to recursion basics and solve real-world problems. Get interview-ready in just a few hours with strategies developed by FAANG engineers.

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Recursion for Coding Interviews in Python

# What does "Replace all Negative Numbers with 0" Mean?

An array can contain **negative numbers**. Our task is to replace all instances of negative numbers with $0$ starting from a given index of the array.


> This process does not create a new array. Rather, we are modifying the same array.

In this lesson, we will learn how to recursively replace all negative numbers with 0 in an array.

Recursion Fundamentals

Iteration Vs. Recursion

Recursion with Numbers

Recursion with Strings

Recursion with Arrays

Recursion with Data Structures

Conclusion

Replace All Negative Numbers with Zero

What does “Replace all Negative Numbers with 0” Mean?