Word Break
Last updated: June 17, 2026
Quick Overview
Given a string and a dictionary of words, determine if the string can be segmented into space-separated dictionary words. Tests dynamic programming skills, commonly asked at Meta.
Meta
Coding & Algorithms
Software Engineer
Meta
June 17, 2026Software Engineer
Onsite
Coding & Algorithms
Medium
80
0
131 solved
Given a string and a dictionary of words, determine if the string can be segmented into space-separated dictionary words. Tests dynamic programming skills, commonly asked at Meta.
How to Approach This
- Clarify input constraints and edge cases before writing code.
- Walk through your approach verbally and confirm with the interviewer before coding.
- Start with a brute force solution, then optimize. Mention time and space complexity.
- Test your solution with examples, including edge cases like empty input or duplicates.
- Consider common patterns: sliding window, two pointers, hash map, BFS/DFS, dynamic programming.
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Practice DSA ProblemsSample Answer
Problem Analysis
This problem can be effectively solved using dynamic programming, specifically utilizing a boolean array to track which substrings of the input string can be formed using the provided dictionary of wo...
Approach
- Initialize a boolean array
dpof sizen+1(wherenis the length of the input strings) withdp[0] = True, as an empty string can always be segmented. - Iterate through the string using...
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