Package g1301_1400.s1358_number_of_substrings_containing_all_three_characters

Class Solution

java.lang.Object

g1301_1400.s1358_number_of_substrings_containing_all_three_characters.Solution

public class Solution
extends Object

1358 - Number of Substrings Containing All Three Characters.<p>Medium</p> <p>Given a string <code>s</code> consisting only of characters <em>a</em>, <em>b</em> and <em>c</em>.</p> <p>Return the number of substrings containing <strong>at least</strong> one occurrence of all these characters <em>a</em>, <em>b</em> and <em>c</em>.</p> <p><strong>Example 1:</strong></p> <p><strong>Input:</strong> s = &ldquo;abcabc&rdquo;</p> <p><strong>Output:</strong> 10</p> <p><strong>Explanation:</strong> The substrings containing at least one occurrence of the characters <em>a</em>, <em>b</em> and <em>c are &ldquo;<em>abc</em>&rdquo;, &ldquo;<em>abca</em>&rdquo;, &ldquo;<em>abcab</em>&rdquo;, &ldquo;<em>abcabc</em>&rdquo;, &ldquo;<em>bca</em>&rdquo;, &ldquo;<em>bcab</em>&rdquo;, &ldquo;<em>bcabc</em>&rdquo;, &ldquo;<em>cab</em>&rdquo;, &ldquo;<em>cabc</em>&rdquo;</em> and <em>&ldquo;<em>abc</em>&rdquo;</em> ( <strong>again</strong> )<em>.</em></p> <p><strong>Example 2:</strong></p> <p><strong>Input:</strong> s = &ldquo;aaacb&rdquo;</p> <p><strong>Output:</strong> 3</p> <p><strong>Explanation:</strong> The substrings containing at least one occurrence of the characters <em>a</em>, <em>b</em> and <em>c are &ldquo;<em>aaacb</em>&rdquo;, &ldquo;<em>aacb</em>&rdquo;</em> and <em>&ldquo;<em>acb</em>&rdquo;.</em></p> <p><strong>Example 3:</strong></p> <p><strong>Input:</strong> s = &ldquo;abc&rdquo;</p> <p><strong>Output:</strong> 1</p> <p><strong>Constraints:</strong></p> <ul> <li><code>3 <= s.length <= 5 x 10^4</code></li> <li><code>s</code> only consists of <em>a</em>, <em>b</em> or _c _characters.</li> </ul>

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
int	numberOfSubstrings(String s)

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

numberOfSubstrings

public int numberOfSubstrings(String s)