Matlab如何给数组元素排序

问题

给定的数组，需要进行排序，一般的排序可以再Excel上完成，但对于字符串或复杂的数组的排序就无法完芤晟踔肿成了，就需要更方便的数据进行排序了，如何对数组元素进行排序下面将举例说明。

解决方法

讲一个数据矩阵随机重新排序

%程序如下：

%%%%%程序开始%%%%%%

data = [1 5 9 8 7; 2 6 4 3 0];

index = randperm(10);

data = data(reshape(index, size(data)))

%%%%%程序结束%%%%%

输出结果为：

将一组打乱的字符串重新排序

%程序如下：

%%%%%程序开始%%%%%%

data = {'0-0-0.xls' '1-0-0.xls' '10-0-0.xls' ...

'11-0-0.xls' '12-0-0.xls' '13-0-0.xls' '14-0-0.xls' ...

'15-0-0.xls' '16-0-0.xls' '17-0-0.xls' '18-0-0.xls' ...

'19-0-0.xls' '19-39-52.xls' '2-0-0.xls' '20-0-0.xls' ...

'21-0-0.xls' '22-0-0.xls' '23-0-0.xls' '23-0-29.xls' ...

'3-0-0.xls' '4-0-0.xls' '5-0-0.xls' '6-0-0.xls' ...

'7-0-0.xls' '8-0-0.xls' '9-0-0.xls'}; %原始的字符串单元数组

remain = data; %remain用于保存提取数值后的字符串，用于再次提取其中剩余的数值

num = zeros(length(data), 3); %用于保存每次提取的数值

[str_num1, remain] = strtok(remain, '-'); %提取第1组数值

num(:, 1) = str2double(str_num1)';

[str_num2, remain] = strtok(remain, '-'); %提取第2组数值

num(:, 2) = str2double(str_num2)';

[str_num3, remain] = strtok(remain, '.'); %提取第3组数值

num(:, 3) = str2double(str_num3)';

%%%%%%%%以下为方法1的实现代码%%%%%%%%%%%%%

[num2, index1] = sortrows(num, [1 2 3]); %依次按第1列、第2列、第3列的数值进行排序

data2 = data(index1)

%%%%%%%%以下为方法2的实现代码%%%%%%%%%%%%%

% num3 = num(:, 1) * 10000 + num(:, 2) * 100 + num(:, 3); %根据数值的权重，获得新数值

% [num4, index2] = sort(num3); %新数值排序

% data3 = data(index2) %获得最终字符串单元数组

%%%%%程序结束%%%%%

输出结果为：