删除一个字符串中所有出现的给定子字符串

/*
 * Problem: Given two strings 's' and 'part', repeatedly remove the leftmost occurrence of 'part' in 's' until it no longer exists.
 * Return the remaining string.
 *
 * Approach:
 * 1. Use Java Streams and StringBuilder to efficiently remove occurrences.
 * 2. Stream through the string and rebuild it without 'part'.
 */
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class Solution {
    public String removeOccurrences(String s, String part) {
        StringBuilder result = new StringBuilder();
        int index = 0;
        while ((index = s.indexOf(part)) != -1) { // Find the index of 'part'
            result.append(s, 0, index); // Append the substring before 'part'
            s = s.substring(index + part.length()); // Update 's' by removing the found 'part'
        }
        result.append(s); // Append the remaining part of 's'
        return result.toString(); // Convert StringBuilder to String and return
    }
}