MATLAB代码：计算1950年至2021年期间各国人口增长率和增长人数

以下是使用MATLAB计算每个国家在2011年至2021年期间的人口增长率和增长人数的示例代码：\n\nmatlab\n% 读取数据文件\ndata = readtable('population.csv');\n\n% 提取国家名称和对应的人口数据\ncountries = data(:,1);\npopulations = data(:,2:end);\n\n% 将数据转换为矩阵形式\npopulations = table2array(populations);\n\n% 计算每年的人口增长率和增长人数\nstartYear = 2011;\nendYear = 2021;\nnumYears = endYear - startYear + 1;\n\ngrowthRates = zeros(size(populations, 1), numYears);\ngrowthNumbers = zeros(size(populations, 1), numYears);\n\nfor i = 1:size(populations, 1)\n for j = 1:numYears\n growthRates(i, j) = (populations(i, startYear+j-1) - populations(i, startYear+j-2)) / populations(i, startYear+j-2) * 100;\n growthNumbers(i, j) = populations(i, startYear+j) - populations(i, startYear+j-1);\n end\nend\n\n% 输出结果\nfor i = 1:size(populations, 1)\n disp(['Country: ', countries{i, 1}]);\n disp('Year | Growth Rate (%) | Growth Number');\n for j = 1:numYears\n disp([num2str(startYear+j-1), ' | ', num2str(growthRates(i, j)), ' | ', num2str(growthNumbers(i, j))]);\n end\n disp('---------------------------------------');\nend\n\n\n请确保将population.csv替换为实际的数据文件名，并且该文件应位于MATLAB的当前工作目录中。此代码将逐行读取数据文件，计算每年的人口增长率和增长人数，并将结果按国家和年份分别输出。