如何使用foreach循环替换字符串中的字符？

String sourceString = "Hello World!";
String targetString = "";
char replaceChar = 'o';

for (char c : sourceString.toCharArray()) {
    if (c == replaceChar) {
        targetString += '*';
    } else {
        targetString += c;
    }
}

System.out.println("替换后的字符串: " + targetString);

source_string = "Hello World!"
target_string = ""
replace_char = 'o'

for char in source_string:
    if char == replace_char:
        target_string += '*'
    else:
        target_string += char

print("替换后的字符串:", target_string)

string sourceString = "Hello World!";
string targetString = "";
char replaceChar = 'o';

foreach (char c in sourceString)
{
    if (c == replaceChar)
    {
        targetString += '*';
    }
    else
    {
        targetString += c;
    }
}

Console.WriteLine("替换后的字符串: " + targetString);