How to Solve Decoded String at Index Problem
Master the Decoded String at Index LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
Interview Coder generates complete solutions and debugging hints that you can use while explaining your approach, so you stay calm and in control.
Decoded String at Index
You are given an encoded string s. To decode the string to a tape, the encoded string is read one character at a time and the following steps are taken: If the character read is a letter, that letter ...
Interview Coder will help you solve this problem in real-time during your interview
✨ Get instant solutions, explanations, and code generation
Understanding the Decoded String at Index Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
You are given an encoded string s. To decode the string to a tape, the encoded string is read one character at a time and the following steps are taken: If the character read is a letter, that letter is written onto the tape. If the character read is a digit d, the entire current tape is repeatedly written d - 1 more times in total. Given an integer k, return the kth letter (1-indexed) in the decoded string.
Decoded String at Index
Related Topics
How Interview Coder Helps
Get real-time assistance for Decoded String at Index problems during coding interviews. Interview Coder provides instant solutions and explanations.
Examples
s = "leet2code3", k = 10"o"The decoded string is "leetleetcodeleetleetcodeleetleetcode". The 10th letter in the string is "o".
s = "ha22", k = 5"h"The decoded string is "hahahaha". The 5th letter is "h".
s = "a2345678999999999999999", k = 1"a"The decoded string is "a" repeated 8301530446056247680 times. The 1st letter is "a".
Constraints
2 <= s.length <= 100s consists of lowercase English letters and digits 2 through 9.s starts with a letter.1 <= k <= 109It is guaranteed that k is less than or equal to the length of the decoded string.The decoded string is guaranteed to have less than 263 letters.How Interview Coder Helps with Leetcode Problems
Trust anchors reduce friction for conversion. Reinforce undetectability claims, platform compatibility, user counts, and the free trial to remove perceived risk.
See Interview Coder in Action
Watch how Interview Coder helps solve LeetCode problems during live interviews
Undetectability Checklist
Platform Compatibility
User results and traction
More than 87,000 developers use Interview Coder and early launch metrics showed rapid adoption. Social proof signals that this approach helps real candidates land offers across a range of companies.
Undetectability and technical details
Our native desktop architecture avoids common detection vectors used by browser extensions. We provide a clear checklist so you can run basic checks and confirm the app will be invisible during live interviews.
Platform compatibility and limitations
We work with Zoom, HackerRank, CodeSignal, CoderPad and other web based platforms, with a known list of app version caveats. Check the compatibility note and request a browser link if a specific desktop app is unsupported.
Frequently Asked Questions
Common questions about solving Decoded String at Index and using Interview Coder during coding interviews.
Interview Coder generates complete solutions instantly with proper complexity analysis, letting you focus on explaining your approach and demonstrating problem-solving skills rather than getting stuck on implementation details during high-pressure situations.
Ready to Get Started?
Download Interview Coder now and join thousands of developers who have aced their coding interviews