Practice Extra Characters in a String

Read the task, work through the examples, and check your approach against the constraints. Use the original LeetCode task for coding and submissions.

Medium#2707

LeetCode Problem

Extra Characters in a String

Array Hash Table String Dynamic Programming Trie

Problem Statement

You are given a 0-indexed string s and a dictionary of words dictionary. You have to break s into one or more non-overlapping substrings such that each substring is present in dictionary. There may be some extra characters in s which are not present in any of the substrings. Return the minimum number of extra characters left over if you break up s optimally.

Source: Extra Characters in a String on LeetCode. Use the original task for its coding environment and submissions.

Examples

# Example 1

Input

s = "leetscode", dictionary = ["leet","code","leetcode"]

Output

# Example 2

Input

s = "sayhelloworld", dictionary = ["hello","world"]

Output

Constraints

1 <= s.length <= 50

1 <= dictionary.length <= 50

1 <= dictionary[i].length <= 50

dictionary[i] and s consists of only lowercase English letters

dictionary contains distinct words

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