public class Copy{
public static void main(String [] args){
String []s={"A","bc","def","higk"};
String[]sBak=new String [6];
System.arraycopy(s,0,sBak,0,s.length);????????????????????????????
for(int i=0;i<sBak.length;i++){
System.out.println(sBak[i]);
}
int [][]a={{1,2},{3,4,5},{7,9}};
int [][]aBak=new int [4][ ];
System.arraycopy(a,0,aBak,0,a.length);
for(int i=0;i<aBak.length;i++){
for(int j=0;j<[color=#FF0000]aBak[i].length;j++){
System.out.println(aBak[i][j]+"--");
}
}
}
}
--------------------------------------------------------------------
--------------------------------------------------------------
-------------------------
public class TestCharat{
public static void main(String [] args){
String s="aaaaaaAAA%#$1234567";
int lcount=0,count=0,scount=0,fcount=0;
for(int i=0;i<s.length();i++){????????????????????
char c=s.charAt(i);
if(c>='A'&&c<='Z'){
lcount++;
}else if(c>='a'&&c<='z'){
count++;
}else if(c>='1'&&c<='9'){
scount++;
}else {fcount++;}
}
System.out.println(lcount+" "+count+" "+scount+" "+fcount);
}
}
public static void main(String [] args){
String []s={"A","bc","def","higk"};
String[]sBak=new String [6];
System.arraycopy(s,0,sBak,0,s.length);????????????????????????????
for(int i=0;i<sBak.length;i++){
System.out.println(sBak[i]);
}
int [][]a={{1,2},{3,4,5},{7,9}};
int [][]aBak=new int [4][ ];
System.arraycopy(a,0,aBak,0,a.length);
for(int i=0;i<aBak.length;i++){
for(int j=0;j<[color=#FF0000]aBak[i].length;j++){
System.out.println(aBak[i][j]+"--");
}
}
}
}
--------------------------------------------------------------------
--------------------------------------------------------------
-------------------------
public class TestCharat{
public static void main(String [] args){
String s="aaaaaaAAA%#$1234567";
int lcount=0,count=0,scount=0,fcount=0;
for(int i=0;i<s.length();i++){????????????????????
char c=s.charAt(i);
if(c>='A'&&c<='Z'){
lcount++;
}else if(c>='a'&&c<='z'){
count++;
}else if(c>='1'&&c<='9'){
scount++;
}else {fcount++;}
}
System.out.println(lcount+" "+count+" "+scount+" "+fcount);
}
}
解决方案 »
免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货