-
1.不帶類型寫法:
1
List listWithoutDup =
new
ArrayList(
new
HashSet(listWithDup));
1)Java 7以下寫法:1List<string> listWithoutDup =
new
ArrayList<string>(
new
HashSet<string>(listWithDup));</string></string></string>
1List<string> listWithoutDup =
new
ArrayList<>(
new
HashSet<>(listWithDup));</string>
樣例:1234567891011121314151617import
java.util.ArrayList;
import
java.util.HashSet;
import
java.util.List;
public
class
Test {
public
static
void
main(String[] args) {
List<string> listWithDup =
new
ArrayList<string>();
listWithDup.add(
"1"
);
listWithDup.add(
"2"
);
listWithDup.add(
"3"
);
listWithDup.add(
"1"
);
List<string> listWithoutDup =
new
ArrayList<string>(
new
HashSet<string>(listWithDup));
System.out.println(
"list with dup:"
+ listWithDup);
System.out.println(
"list without dup:"
+ listWithoutDup);
}
}</string></string></string></string></string>
list without dup:[3, 2, 1]以上轉:http://www.2cto.com/kf/201410/341634.html
一行代碼實現java list去重
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