求教大神这道java题整么做,给代码,谢了
1个回答
推荐于2016-01-23
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第一种方法,使用冒泡排序法:
public class Test {
public static void sortNames(String[] namas){
int len = namas.length;
String temp = null;
for( int i = 0; i < len - 1; i++){
for( int j = 0; j < len - 1 - i; j++){
if((namas[j].compareTo(namas[j + 1])) > 0){
temp = namas[j];
namas[j] = namas[j + 1];
namas[j + 1] = temp;
}
}
}
}
public static void print(String[] list){
for (String str :list){
System.out.print(str+" ");
}
}
public static void main(String[] args){
String[] names ={"Tom","Jack","Merry","Smith","Sunny"};
System.out.println("*****排序前*****");
print(names);
System.out.println("");
System.out.println("*****排序后******");
sortNames(names);
print(names);
}
}
另一种方法,用Arrays sort
import java.util.Arrays;
public class TestSort{
public static void main(String[] args) {
String[] strArr={"Tom","Jack","Merry","Smith","Sunny"};
System.out.println("*****排序前*****");
for(int i=0;i<strArr.length;i++){
System.out.print(" "+strArr[i]);
}
Arrays.sort(strArr);
System.out.println();
System.out.println("*****排序后*****");
for(int i=0;i<strArr.length;i++){
System.out.print(" "+strArr[i]);
}
}
}
public class Test {
public static void sortNames(String[] namas){
int len = namas.length;
String temp = null;
for( int i = 0; i < len - 1; i++){
for( int j = 0; j < len - 1 - i; j++){
if((namas[j].compareTo(namas[j + 1])) > 0){
temp = namas[j];
namas[j] = namas[j + 1];
namas[j + 1] = temp;
}
}
}
}
public static void print(String[] list){
for (String str :list){
System.out.print(str+" ");
}
}
public static void main(String[] args){
String[] names ={"Tom","Jack","Merry","Smith","Sunny"};
System.out.println("*****排序前*****");
print(names);
System.out.println("");
System.out.println("*****排序后******");
sortNames(names);
print(names);
}
}
另一种方法,用Arrays sort
import java.util.Arrays;
public class TestSort{
public static void main(String[] args) {
String[] strArr={"Tom","Jack","Merry","Smith","Sunny"};
System.out.println("*****排序前*****");
for(int i=0;i<strArr.length;i++){
System.out.print(" "+strArr[i]);
}
Arrays.sort(strArr);
System.out.println();
System.out.println("*****排序后*****");
for(int i=0;i<strArr.length;i++){
System.out.print(" "+strArr[i]);
}
}
}
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