计算分隔字段中出现的子字符串的次数

def count_substring_occurrences(string, delimiter, substring):
    count = 0
    fields = string.split(delimiter)
    for field in fields:
        count += field.count(substring)
    return count

# 示例用法
string = "Hello,World,Hello,World,Hello"
delimiter = ","
substring = "Hello"
occurrences = count_substring_occurrences(string, delimiter, substring)
print("子字符串出现的次数：", occurrences)

function countSubstringOccurrences(string, delimiter, substring) {
    var count = 0;
    var fields = string.split(delimiter);
    for (var i = 0; i < fields.length; i++) {
        count += (fields[i].match(new RegExp(substring, "g")) || []).length;
    }
    return count;
}

// 示例用法
var string = "Hello,World,Hello,World,Hello";
var delimiter = ",";
var substring = "Hello";
var occurrences = countSubstringOccurrences(string, delimiter, substring);
console.log("子字符串出现的次数：", occurrences);