% Speedup1.m
% 功能：比較循環(huán)方法和向量化方法的運(yùn)行速度
%
% 加快MATLAB執(zhí)行程序的方法之一：以向量化代替循環(huán)
%
%   Author: HUANG Huajiang
%   Copyright 2003 UNILAB Research Center, 
%   East China University of Science and Technology, Shanghai, PRC
%   $Revision: 1.0 $  $Date: 2003/04/20 $

clear all
clc

% 循環(huán)方法
tic                 % 開始計(jì)時(shí)
x = .01;
for k = 1:1001
y(k) = log10(x);
x = x + .01;
end
t_cycle = toc       % 結(jié)束計(jì)時(shí)，并把所耗的時(shí)間賦給變量t_cycle

% 向量化方法
tic
x = .01:.01:10;
y = log10(x);
t_vector = toc