MATLAB 代码计算 2011-2021 年各国人口增长率和增长人数

%E8%AF%BB%E5%8F%96%E6%95%B0%E6%8D%AE%E6%96%87%E4%BB%B6 data%20%3D%20readtable(%22population.csv%22);

%20%E8%8E%B7%E5%8F%96%E5%9B%BD%E5%AE%B6%E5%88%97%E8%A1%A8 countries%20%3D%20unique(data.Country);

%20%E5%88%9B%E5%BB%BA%E5%AD%98%E5%82%A8%E7%B4%A0%E6%95%B0%E7%9A%84%E7%9F%A9%E9%98%B5 growth_rate%20%3D%20zeros(length(countries),%2011); growth_number%20%3D%20zeros(length(countries),%2011);

%20%E9%80%9A%E8%BF%87%E6%AF%8F%E4%B8%AA%E5%9B%BD%E5%AE%B6 for%20i%20%3D%201:length(countries) country_data%20%3D%20data(data.Country%20%3D%3D%20countries(i),%20:);

%20%E8%AE%A1%E7%AE%97%E6%AF%8F%E5%B9%B4%E7%9A%84%E4%BA%BA%E5%8F%A3%E5%A2%9E%E9%95%BF%E7%8E%87%E5%92%8C%E5%A2%9E%E9%95%BF%E4%BA%BA%E6%95%B0
for%20j%20%3D%202:12
    population%20%3D%20country_data{j};
    growth_rate(i,%20j-1)%20%3D%20(population(end)%20-%20population(1))%20/%20population(1);
    growth_number(i,%20j-1)%20%3D%20population(end)%20-%20population(1);
end

end

%20%E6%98%BE%E7%A4%BA%E7%B4%A0%E6%95%B0 disp(%22%E5%9B%BD%E5%AE%B6%20%E5%B9%B4%E4%BB%BD%20%E4%BA%BA%E5%8F%A3%E5%A2%9E%E9%95%BF%E7%8E%87%20%E5%A2%9E%E9%95%BF%E4%BA%BA%E6%95%B0%22); for%20i%20%3D%201:length(countries) for%20j%20%3D%201:11 disp([countries(i),%202010%2Bj,%20growth_rate(i,%20j),%20growth_number(i,%20j)]); end end

%E8%AF%A6%E6%83%85,%20%E4%BB%A5%E4%B8%8A%E7%A0%81%E7%A2%BC%E5%8F%97%E5%AE%9A%E6%95%B0%E6%8D%AE%E6%96%87%E4%BB%B6%E7%9A%84%E6%A0%BC%E5%BC%8F%E5%A6%82%E4%B8%8B%E6%98%AF%E3%A4%B7

China,55555555,56565656,57575757,...,90909090,91919191
India,44444444,45454545,46464646,...,80808080,81818181
...

%E6%95%B0%E6%8D%AE%E6%96%87%E4%BB%B6%E5%BA%9A%E5%90%AB%E5%8C%85%E6%8B%89%E4%B8%80%E8%A1%8C%E6%A0%87%E9%A2%98%E8%A1%8C,%E7%AC%AC%E4%B8%80%E5%88%97%E6%98%AF%E5%9B%BD%E5%AE%B6%E5%90%8D%E7%A8%B6,%E5%90%8E%E7%BB%AD%E5%88%97%E6%98%AF%E6%AF%8F%E5%B9%B4%E7%9A%84%E4%BA%BA%E5%8F%A3%E6%95%B0%E9%87%8F.