借助Collections工具类:
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import java.util.ArrayList;
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import java.util.Collections;
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-
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public
class TTEST {
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public static void main(String[] args) {
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ArrayList<String> arr =
new ArrayList<String>();
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for(
int i=
0;i<
10;++i){
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arr.add(
“str”+i);
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}
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for (String string : arr) {
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System.out.print(string+
” “);
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}
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System.out.println();
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Collections.reverse(arr);
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for (String string : arr) {
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System.out.print(string+
” “);
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}
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}
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}
借助Collections工具类:
-
import java.util.ArrayList;
-
import java.util.Collections;
-
-
-
public
class TTEST {
-
public static void main(String[] args) {
-
ArrayList<String> arr =
new ArrayList<String>();
-
for(
int i=
0;i<
10;++i){
-
arr.add(
“str”+i);
-
}
-
for (String string : arr) {
-
System.out.print(string+
” “);
-
}
-
System.out.println();
-
Collections.reverse(arr);
-
for (String string : arr) {
-
System.out.print(string+
” “);
-
}
-
}
-
}