Grokking the Coding Interview: Patterns for Coding Questions
Ask Author
Back to course home

0% completed

String Permutations by changing case (medium)
Table of Contents

Contents are not accessible

Contents are not accessible

Contents are not accessible

Contents are not accessible

Contents are not accessible

Problem Statement

Given a string, find all of its permutations preserving the character sequence but changing case.

Example 1:

Input: "ad52"
Output: "ad52", "Ad52", "aD52", "AD52"

Example 2:

Input: "ab7c"
Output: "ab7c", "Ab7c", "aB7c", "AB7c", "ab7C", "Ab7C", "aB7C", "AB7C"

Constraints:

  • 1 <= str.length <= 12
  • str consists of lowercase English letters, uppercase English letters, and digits.

Try it yourself

Try solving this question here:

.....

.....

.....

Like the course? Get enrolled and start learning!

Table of Contents

Contents are not accessible

Contents are not accessible

Contents are not accessible

Contents are not accessible

Contents are not accessible