public class MP {
public static void main(String[] args){
Object a[] = new Object[9];
a[0] = "1";
a[1] = "2";
a[2] = "8";
a[3] = "5";
a[4] = "7";
a[5] = "9";
a[6] = "13";
a[7] = "4";
a[8] = "0";
Object temp[] = new Object[9];
for(int i=0;i<a.length;i++){
for(int j=0;j<a.length-i-1;j++){
if(((Integer)a[j]).intValue()>((Integer)a[j+1]).intValue()){
temp[i] = a[j];
a[j] = a[j+1];
a[j] = temp[i];
}
}
}
for(int k=0;k<a.length;k++){
System.out.print(temp[k]);
}
}
}
运行时有错误:
Exception in thread "main" java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Integer
at com.zy.daoc.MP.main(MP.java:18)
如有问题,请帮忙修改
public static void main(String[] args){
Object a[] = new Object[9];
a[0] = "1";
a[1] = "2";
a[2] = "8";
a[3] = "5";
a[4] = "7";
a[5] = "9";
a[6] = "13";
a[7] = "4";
a[8] = "0";
Object temp[] = new Object[9];
for(int i=0;i<a.length;i++){
for(int j=0;j<a.length-i-1;j++){
if(((Integer)a[j]).intValue()>((Integer)a[j+1]).intValue()){
temp[i] = a[j];
a[j] = a[j+1];
a[j] = temp[i];
}
}
}
for(int k=0;k<a.length;k++){
System.out.print(temp[k]);
}
}
}
运行时有错误:
Exception in thread "main" java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Integer
at com.zy.daoc.MP.main(MP.java:18)
如有问题,请帮忙修改
public class maoPao {
public static int[] mp(int []arry){
for(int i=0;i<arry.length;i++){
for(int j=i;j<arry.length;j++){
int temp;
if(arry[i]>arry[j]){
temp=arry[i];
arry[i]=arry[j];
arry[j]=temp;
}
}
}
return arry;
}
public static void main(String[] args) {
int[] ar ={12,23,1,23,45,11,42,9,45,2,16,77,86,56,43};
mp(ar);
for(int i=0;i<ar.length;i++){
System.out.print(ar[i]+" ");
}
}}
public class Test {
public static void main(String[] args){
Object a[] = new Object[9];
a[0] = "1";
a[1] = "2";
a[2] = "8";
a[3] = "5";
a[4] = "7";
a[5] = "9";
a[6] = "13";
a[7] = "4";
a[8] = "0";
Object temp[] = new Object[9];
for(int i=0;i<a.length;i++){
for(int j=0;j<a.length-i-1;j++){
// if(((Integer)a[j]).intValue()>((Integer)a[j+1]).intValue()){ 出错!!
if( Integer.valueOf(a[j].toString())>Integer.valueOf(a[j+1].toString()) ){
temp[i] = a[j];
a[j] = a[j+1];
a[j+1] = temp[i];
}
}
}
for(int k=0;k<a.length;k++){
System.out.println(a[k]);
}
}
}
The operator > is undefined for the argument type(s) java.lang.Integer,
java.lang.Integer
请帮忙,谢谢,在线急等
public static void main(String[] args){
Object a[] = new Object[9];
a[0] = "1";
a[1] = "2";
a[2] = "8";
a[3] = "5";
a[4] = "7";
a[5] = "9";
a[6] = "13";
a[7] = "4";
a[8] = "0";
Object temp[] = new Object[9];
for(int i=0;i<a.length;i++){
for(int j=0;j<a.length-i-1;j++){
if((Integer.valueOf(a[j].toString())).intValue()>((Integer.valueOf(a[j+1].toString())).intValue())){
temp[i] = a[j];
a[j] = a[j+1];
a[j] = temp[i];
}
}
}
for(int k=0;k<a.length;k++){
System.out.print(temp[k]);
}
}
}
底下 temp 也要转换 自己转下吧
这样写更合理呀!
for(int j=i+1;j<arry.length;j++){
我的代码是在JDK1.5 上面 编译的 没有问题请问你的jdk 版本,运行如下命令java -version
/**
* @author troy(J2EE)
* @version 1.0 1995年的3月23日
*/
public class Test {
public static void main(String[] args){
int[] a= new int[9];
a[0] = 1;
a[1] = 2;
a[2] = 8;
a[3] = 5;
a[4] = 7;
a[5] = 9;
a[6] = 13;
a[7] = 4;
a[8] = 0;
int temp;
for(int i=0;i<a.length;i++){
for(int j=0;j<a.length-i-1;j++){
if( a[j]>a[j+1] ){
temp = a[j];
a[j] = a[j+1];
a[j+1] = temp;
}
}
}
for(int k=0;k<a.length;k++){
System.out.println(a[k]);
}
}
}
看了这么多回帖,不就是转换出错么,
if(Integet.IntValue(a[j])>Integer.IntValue(a[j+1]))
{
}
三楼的同志干嘛还要把它toString()啊?
还有冒泡排序的外层循环应该是i<a.length-1吧!!!!!!