Package g1401_1500.s1419_minimum_number_of_frogs_croaking

Class Solution

java.lang.Object

g1401_1500.s1419_minimum_number_of_frogs_croaking.Solution

public class Solution
extends Object

1419 - Minimum Number of Frogs Croaking.<p>Medium</p> <p>You are given the string <code>croakOfFrogs</code>, which represents a combination of the string <code>&quot;croak&quot;</code> from different frogs, that is, multiple frogs can croak at the same time, so multiple <code>&quot;croak&quot;</code> are mixed.</p> <p><em>Return the minimum number of</em> different <em>frogs to finish all the croaks in the given string.</em></p> <p>A valid <code>&quot;croak&quot;</code> means a frog is printing five letters <code>'c'</code>, <code>'r'</code>, <code>'o'</code>, <code>'a'</code>, and <code>'k'</code> <strong>sequentially</strong>. The frogs have to print all five letters to finish a croak. If the given string is not a combination of a valid <code>&quot;croak&quot;</code> return <code>-1</code>.</p> <p><strong>Example 1:</strong></p> <p><strong>Input:</strong> croakOfFrogs = &ldquo;croakcroak&rdquo;</p> <p><strong>Output:</strong> 1</p> <p><strong>Explanation:</strong> One frog yelling &ldquo;croak**&rdquo;** twice.</p> <p><strong>Example 2:</strong></p> <p><strong>Input:</strong> croakOfFrogs = &ldquo;crcoakroak&rdquo;</p> <p><strong>Output:</strong> 2</p> <p><strong>Explanation:</strong> The minimum number of frogs is two. The first frog could yell &ldquo;<strong>cr</strong>c<strong>oak</strong>roak&rdquo;. The second frog could yell later &ldquo;cr<strong>c</strong>oak<strong>roak</strong>&rdquo;.</p> <p><strong>Example 3:</strong></p> <p><strong>Input:</strong> croakOfFrogs = &ldquo;croakcrook&rdquo;</p> <p><strong>Output:</strong> -1</p> <p><strong>Explanation:</strong> The given string is an invalid combination of &ldquo;croak**&rdquo;** from different frogs.</p> <p><strong>Constraints:</strong></p> <ul> <li><code>1 <= croakOfFrogs.length <= 10⁵</code></li> <li><code>croakOfFrogs</code> is either <code>'c'</code>, <code>'r'</code>, <code>'o'</code>, <code>'a'</code>, or <code>'k'</code>.</li> </ul>

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
int	minNumberOfFrogs(String s)
void	reduce(int[] f)

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

minNumberOfFrogs

public int minNumberOfFrogs(String s)

reduce

public void reduce(int[] f)