自测一下你的Java掌握得怎么样？

http://blog.youkuaiyun.com/bitfan/archive/2010/12/13/6072690.aspx

p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Monaco} span.s1 {color: #910068} span.s2 {color: #0000cb} span.Apple-tab-span {white-space:pre}

public static String reverse(String from){

char [] chars=from.toCharArray();

for(int i=0;i<chars.length/2;i++){

char tmp=chars[i];

chars[i]=chars[chars.length-i-1];

chars[chars.length-i-1]=tmp;

}

return new String(chars);

}

public static int[] maxminavg(int from[]){

int max=from[0];

int min=from[1];

int sum=from[0];

for(int i=1;i<from.length;i++){

if(from[i]>max){

max=from[i];

}

if(from[i]<min){

min=from[i];

}

sum+=from[i];

}

return new int[]{max,min,sum/from.length};

}

p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Monaco} p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Monaco; min-height: 15.0px} span.s1 {color: #910068} span.Apple-tab-span {white-space:pre}

public static int[] getRandomizeNumbers(int begin,int end,int count){

int result[]=new int[count];

for(int i=0;i<count;i++){

result[i]=(int)(Math.random()*(end-begin)+begin);

}

return result;

}