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How to Solve Find Words That Can Be Formed by Characters Problem
Master the Find Words That Can Be Formed by Characters LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsEasy#1160
LeetCode ProblemFind Words That Can Be Formed by Characters
You are given an array of strings words and a string chars. A string is good if it can be formed by characters from chars (each character can only be used once for each word in words). Return the sum of lengths of all good strings in words.
ArrayHash TableStringCounting
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Problem Breakdown
Understanding the Find Words That Can Be Formed by Characters Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
You are given an array of strings words and a string chars. A string is good if it can be formed by characters from chars (each character can only be used once for each word in words). Return the sum of lengths of all good strings in words.
EasyProblem #1160
LeetCodeFind Words That Can Be Formed by Characters
Related Topics
ArrayHash TableStringCounting
How Phantom Code Helps
Get real-time assistance for Find Words That Can Be Formed by Characters problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
words = ["cat","bt","hat","tree"], chars = "atach"
Output
6
# Example 2
Input
words = ["hello","world","leetcode"], chars = "welldonehoneyr"
Output
10
Constraints
1 <= words.length <= 1000
1 <= words[i].length, chars.length <= 100
words[i] and chars consist of lowercase English letters.
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Solve Find Words That Can Be Formed by Characters — You are given an array of strings words and a string chars. A string is good if ...
Here's the optimal approach using Array:
def solve(input):
# Optimal O(n) solution
return result
Time: O(n) | Space: O(n)
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Frequently Asked Questions
Common questions about solving Find Words That Can Be Formed by Characters and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Find Words That Can Be Formed by Characters during interviews?
Phantom Code 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.
What if the interviewer asks follow-up questions or modifications to problems like Find Words That Can Be Formed by Characters?
Phantom Code adapts in real-time. Screenshot the modified problem or use audio mode to capture the interviewer's follow-up, and get an updated solution within seconds — including edge cases and optimizations.
Can Phantom Code help me communicate my solution for problems like Find Words That Can Be Formed by Characters?
Yes. Phantom Code provides step-by-step approach explanations with 3 progressive thoughts, so you can walk through your solution naturally. It also provides time and space complexity analysis to discuss trade-offs.
How does Phantom Code assist with different programming languages for Find Words That Can Be Formed by Characters type problems?
Phantom Code supports 11 programming languages including Python, Java, C++, JavaScript, TypeScript, Go, Rust, Ruby, Swift, Kotlin, and C#. Set your preferred language and get idiomatic solutions.
What coding mistakes does Phantom Code help me avoid during Find Words That Can Be Formed by Characters interviews?
Phantom Code catches common mistakes like off-by-one errors, missing edge cases, incorrect base conditions, and suboptimal approaches. It provides clean, well-structured code that handles all edge cases.
Is Phantom Code detectable when solving problems like Find Words That Can Be Formed by Characters during live interviews?
No. Phantom Code runs as an invisible desktop overlay that doesn't appear in screen shares, recordings, or proctoring software. It works with Zoom, HackerRank, CodeSignal, CoderPad, and all major platforms.
How does Phantom Code help when I'm struggling with Find Words That Can Be Formed by Characters style questions under pressure?
The AI provides structured guidance: first the approach (what algorithm/data structure to use and why), then the implementation with clean code, and finally complexity analysis. This helps you think clearly even under pressure.
Does Phantom Code work for the coding platforms used in Find Words That Can Be Formed by Characters interviews?
Yes. Phantom Code works with all major coding platforms including LeetCode, HackerRank, CodeSignal, CoderPad, HackerEarth, and any browser-based coding environment.
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