Grokking the Art of Recursion for Coding Interviews
Ask Author
Back to course home

0% completed

Vote For New Content
7. Number Frequency
On this page

Problem Statement

Examples:

Try it yourself

Problem Statement

Write a Recursive Solution to Count occurrences of an Element in an Array.

Given an array of integers and a key element, write a recursive solution to count the occurrences of the key element in the array.

Examples:

Sr#ArrayInput KeyOutputDescription
1[2, 4, 6, 8, 4]42The key element 4 occurs twice in the array.
2[1, 3, 5, 7, 9]20The key element 2 does not exist in the array.
3[1, 2, 2, 2, 3]23The key element 2 occurs three times in the array.

Try it yourself

Try solving this question here:

Python3
Python3
. . . .

.....

.....

.....

Like the course? Get enrolled and start learning!

On this page

Problem Statement

Examples:

Try it yourself