WebFeb 25, 2024 · As you want the first character which is unique, if the element didn't exist in the set and countMatches returns 1, you got your result. If no uniques are found, return … WebOct 22, 2024 · First Unique Character in a String Problem Statement: Given a string, find the first non-repeating character in it and return its index. If it doesn’t exist, return -1. Examples: s = "leetcode" return 0. s = "loveleetcode", return 2. Note: You may assume the string contains only lowercase letters. Solution
First Unique Character in a String - LeetCode
WebNov 30, 2015 · @Nullable public static Character firstUnique (String str) { char [] chars = str.toCharArray (); boolean [] repeated = new boolean [chars.length]; for (int i = 0; i < chars.length; i++) { for (int j = i + 1; j < chars.length; j++) { if (chars [i] == chars [j]) { repeated [i] = true; repeated [j] = true; } } } for (int i = 0; i < repeated.length; … WebNote: You may assume the string contain only lowercase letters. **/ //Runtime: 40 ms, faster than 86.06% of C++ online submissions for First Unique Character in a String. //Memory Usage: 12.8 MB, less than 99.44% of C++ online submissions for First Unique Character in a String. class Solution {public: int firstUniqChar(string s) ipod shuffle charging light blinking orange
387. First Unique Character in a String - LeetCode Solutions
WebFeb 25, 2024 · As you want the first character which is unique, if the element didn't exist in the set and countMatches returns 1, you got your result. If no uniques are found, return -1 (for example) as representation that no uniques were found in the string. Web387. First Unique Character in a String - LeetCode Solutions Preface Style Guide Problems Problems 1. Two Sum 2. Add Two Numbers 3. Longest Substring Without Repeating Characters 4. Median of Two Sorted Arrays 5. Longest Palindromic Substring 6. Zigzag Conversion 7. Reverse Integer 8. String to Integer (atoi) 9. Palindrome Number 10. WebApr 7, 2024 · Problems Given a string s, find the first non-repeating character in it and return its index. If it does not exist, return -1. Solution遍历,数组统计记录出现次数。如果数组未记录过,则将其index添加进列表中保存。 遍历列表,如果数组统计结果为1,则返回对 … orbit contact address