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Java - Find first non repeating character in a string

Java - Find first non repeating character in a string

Java program to count the occurrence of each character in a string using Hashmap - GeeksforGeeks

Java program to count the occurrence of each character in a …

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Write a Java program to find unique characters in a String – Codebun

Write a Java program to find unique characters in a String – Codebun

Govind Pothuraju on Instagram: "Day 26/200: First Unique Character in a String – LeetCode 387 Given a string, return the index of the first non-repeating character. If it doesn’t exist, return -1. ❌ Brute force O(n²): Check frequency of each character individually. ✅ HashMap / Frequency array O(n): Count characters, then find the first unique one. ⚡ A must-know string hashing problem that builds the foundation for problems like anagrams and sliding window challenges. Follow @codewith_govind for

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$Code With Brain on Instagram: "📌 Day 22 | Interview Question ❓ Problem: We need to print an odd-length word starting from the middle character, then expand outward left and right alternately. 👉 Example: Input → "HELLO" Output → L E H L O --- 🐍 Python Code def print_pattern(word): n = len(word) mid = n // 2 print(word[mid], end=" ") # Middle char for i in range(1, mid + 1): if mid - i >= 0: print(word[mid - i], end=" ") if mid + i using namespace std; void printPattern(string word) { int n = w$

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