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Insert a Character at Any Position Without Losing the Original Characters — drill-2 — LearnYard

03 Dsa FundamentalsString BasicsInsert a Character at the First, Last, and Kth Position in a String

Lesson · no judge

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DSA FUNDAMENTALS › STRING BASICS

Write it, run it, read the output

Reading · 6 minQuiz · 5 questions2 code drills · run only

This is a scratch drill — your code runs, nothing is graded or recorded. No test cases, no expected output, no verdict.

TASK

Start with "code" and independently use StringBuilder to insert 'X' at the first position, the last position, and position 3. Assign each StringBuilder result back to a String and print the results in that order: "Xcode", "codeX", and "coXde".

Java

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OUTPUT

Sample

Xcode
codeX
coXde

What a finished answer prints, from the lesson. Nothing has run yet — press Run and this is replaced by your program’s own output.

Previous · Check if a String Contains All Letters from 'a' to 'z'3 parts left before this item is marked done.

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Scoped to Insert a Character at the First, Last, and Kth Position in a String. The tutor can see the reading, its checkpoints and your drill code.

The tutor reads this lesson alongside you and answers questions about it — nudging you towards the answer rather than handing it over.

The tutor will not answer a quiz question for you, and it will not paste a working drill. It explains the reading it can see.