python 代码中 ret=True 代表什么意思?答:l2 = sorted(lst,reverse=True) #倒序print(l2) #[18, 13, 12, 9, 7, 6, 5, 5, 1]#根据字符串长度给列表排序lst = ['one', 'two', 'three', 'four', 'five', 'six']def f(s):return len(s)l1 = sorted(lst, key=f, )print(l1) #['one', 'two', 'six', 'four', 'five'...
matlab一个存储x,y坐标的两列矩阵,怎么对矩阵先按照x坐标排序,然后对x...答:function [ sortedMat ] = TwoPhaseSort( mat, n1, n2 )sortedMat = zeros(size(mat));partialSortedMat = sortrows(mat,n1);n1Value = (tabulate(partialSortedMat(:,n1)));startRows = 0;for i = 1:size(n1Value,1) sortedMat((startRows+1):(startRows+n1Value(i,2)) , :)...