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How to Solve Substring with Concatenation of All Words Problem
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LeetCode ProblemSubstring with Concatenation of All Words
You are given a string s and an array of strings words. All the strings of words are of the same length. A concatenated string is a string that exactly contains all the strings of any permutation of words concatenated. Return an array of the starting indices of all the concatenated substrings in s. You can return the answer in any order.
Hash TableStringSliding Window
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Problem Breakdown
Understanding the Substring with Concatenation of All Words Problem
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Problem Statement
You are given a string s and an array of strings words. All the strings of words are of the same length. A concatenated string is a string that exactly contains all the strings of any permutation of words concatenated. Return an array of the starting indices of all the concatenated substrings in s. You can return the answer in any order.
HardProblem #30
LeetCodeSubstring with Concatenation of All Words
Related Topics
Hash TableStringSliding Window
How Phantom Code Helps
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Examples
# Example 1
Input
s = "barfoothefoobarman", words = ["foo","bar"]
Output
[0,9]
# Example 2
Input
s = "wordgoodgoodgoodbestword", words = ["word","good","best","word"]
Output
[]
# Example 3
Input
s = "barfoofoobarthefoobarman", words = ["bar","foo","the"]
Output
[6,9,12]
Constraints
1 <= s.length <= 104
1 <= words.length <= 5000
1 <= words[i].length <= 30
s and words[i] consist of lowercase English letters.
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Solve Substring with Concatenation of All Words — You are given a string s and an array of strings words. All the strings of words...
Here's the optimal approach using Hash Table:
def solve(input):
# Optimal O(n) solution
return result
Time: O(n) | Space: O(n)
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Frequently Asked Questions
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How does Phantom Code assist with different programming languages for Substring with Concatenation of All Words type problems?
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What coding mistakes does Phantom Code help me avoid during Substring with Concatenation of All Words 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.
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Does Phantom Code work for the coding platforms used in Substring with Concatenation of All Words interviews?
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