Package g0301_0400.s0387_first_unique_character_in_a_string

Class Solution

java.lang.Object

g0301_0400.s0387_first_unique_character_in_a_string.Solution

public class Solution
extends Object

387 - First Unique Character in a String.<p>Easy</p> <p>Given a string <code>s</code>, <em>find the first non-repeating character in it and return its index</em>. If it does not exist, return <code>-1</code>.</p> <p><strong>Example 1:</strong></p> <p><strong>Input:</strong> s = &ldquo;leetcode&rdquo;</p> <p><strong>Output:</strong> 0</p> <p><strong>Example 2:</strong></p> <p><strong>Input:</strong> s = &ldquo;loveleetcode&rdquo;</p> <p><strong>Output:</strong> 2</p> <p><strong>Example 3:</strong></p> <p><strong>Input:</strong> s = &ldquo;aabb&rdquo;</p> <p><strong>Output:</strong> -1</p> <p><strong>Constraints:</strong></p> <ul> <li><code>1 <= s.length <= 10⁵</code></li> <li><code>s</code> consists of only lowercase English letters.</li> </ul>

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
int	firstUniqChar(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

firstUniqChar

public int firstUniqChar(String s)