Package g2701_2800.s2707_extra_characters_in_a_string

Class Solution

java.lang.Object

g2701_2800.s2707_extra_characters_in_a_string.Solution

public class Solution
extends Object

2707 - Extra Characters in a String.<p>Medium</p> <p>You are given a <strong>0-indexed</strong> string <code>s</code> and a dictionary of words <code>dictionary</code>. You have to break <code>s</code> into one or more <strong>non-overlapping</strong> substrings such that each substring is present in <code>dictionary</code>. There may be some <strong>extra characters</strong> in <code>s</code> which are not present in any of the substrings.</p> <p>Return <em>the <strong>minimum</strong> number of extra characters left over if you break up</em> <code>s</code> <em>optimally.</em></p> <p><strong>Example 1:</strong></p> <p><strong>Input:</strong> s = &ldquo;leetscode&rdquo;, dictionary = [&ldquo;leet&rdquo;,&ldquo;code&rdquo;,&ldquo;leetcode&rdquo;]</p> <p><strong>Output:</strong> 1</p> <p><strong>Explanation:</strong> We can break s in two substrings: &ldquo;leet&rdquo; from index 0 to 3 and &ldquo;code&rdquo; from index 5 to 8. There is only 1 unused character (at index 4), so we return 1.</p> <p><strong>Example 2:</strong></p> <p><strong>Input:</strong> s = &ldquo;sayhelloworld&rdquo;, dictionary = [&ldquo;hello&rdquo;,&ldquo;world&rdquo;]</p> <p><strong>Output:</strong> 3</p> <p><strong>Explanation:</strong> We can break s in two substrings: &ldquo;hello&rdquo; from index 3 to 7 and &ldquo;world&rdquo; from index 8 to 12. The characters at indices 0, 1, 2 are not used in any substring and thus are considered as extra characters. Hence, we return 3.</p> <p><strong>Constraints:</strong></p> <ul> <li><code>1 <= s.length <= 50</code></li> <li><code>1 <= dictionary.length <= 50</code></li> <li><code>1 <= dictionary[i].length <= 50</code></li> <li><code>dictionary[i]</code> and <code>s</code> consists of only lowercase English letters</li> <li><code>dictionary</code> contains distinct words</li> </ul>

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
int	minExtraChar(String s, String[] dictionary)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Solution

public Solution()

Method Details

minExtraChar

public int minExtraChar(String s,
 String[] dictionary)