function [route, totalDistance] = calculateTourDistance(adjacencyMatrix, startCity)
    % 计算从指定城市出发，遍历所有城市一次后返回起点的路径距离
    % 输入：adjacencyMatrix - 城市间距离的邻接矩阵
    %      startCity - 起始城市的编号
    % 输出：route - 遍历路径
    %      totalDistance - 总路径长度
    
    numCities = size(adjacencyMatrix, 1);
    
    % 创建除起始城市外的城市列表
    otherCities = setdiff(1:numCities, startCity);
    
    % 随机排列其他城市（这里不要求最优路径）
    otherCities = otherCities(randperm(length(otherCities)));
    
    % 创建完整路径
    route = [startCity, otherCities, startCity];
    
    % 计算总路径距离
    totalDistance = 0;
    for i = 1:length(route)-1
        totalDistance = totalDistance + adjacencyMatrix(route(i), route(i+1));
    end
end