Initial commit

ctr.m

@@ -0,0 +1,11 @@
+clear;
+load ctr.mat A
+X = A(:,1);
+[xed,xh]=sort(X);
+[m,n]=size(A);
+C = [];
+for i = 1 : m
+    B = A(xh(m-i+1),1:n);
+    C = [C;B];
+end
+num2str([(1 : m)' C])