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First Unique characters in a string Java

sam9934 answered on September 11, 2023 Popularity 4/10 Helpfulness 1/10

answer First Unique characters in a string Java

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First Unique characters in a string Java

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//saiyam9934
public class Main {
    public static int firstUniqChar(String s) {
        int[] oc = new int[26];
        // Store frequency of each character of s
        for (char c : s.toCharArray()) {
            oc[c - 'a']++;
        }
        // First character with frequency = 1 is the answer
        for (int i = 0; i < s.length(); i++) {
            if (oc[s.charAt(i) - 'a'] == 1) {
                return i;
            }
        }
        // No character with frequency = 1
        return -1;
    }

    public static void main(String[] args) {
        String input = "leetcode";
        int result = firstUniqChar(input);
        System.out.println("Index of the first unique character: " + result);
    }
}

Popularity 4/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: java string unique

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Contributed on Feb 11 2024

sam9934

0 Answers Avg Quality 2/10

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first unique character in a string

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def first_unique_char(string):
    char_count = {}
    
    # Calculate frequency count of each character
    for char in string:
        if char in char_count:
            char_count[char] += 1
        else:
            char_count[char] = 1
    
    # Find the first unique character
    for char in string:
        if char_count[char] == 1:
            return char
    
    # If no unique characters found
    return None

# Example usage
input_string = "leetcode"
first_unique = first_unique_char(input_string)
print("First unique character:", first_unique)

Popularity 7/10 Helpfulness 2/10 Language python

Source: Grepper

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Contributed on Sep 11 2023

YOU.com

0 Answers Avg Quality 2/10

First Unique characters in a string Java

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First Unique characters in a string Java

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first unique character in a string

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