1. Delete the specified number from an integer array, for example: list=[1,2,3,4,5,6], delete the element 5 list=[1,2,3,4,6]
public class ArrayListRemove {
public static void remove(ArrayList<Integer> list, int target){
int size = list.size();
for(int i = size - 1; i >= 0; i--){
int item = list.get(i);
if(target==item){
list.remove(Integer.valueOf(item));//Remove integer numbers as objects
//list.remove(item)//Remove the integer object as an index
}
}
System.out.println(list);
}
public static void main(String[] args) {
ArrayList<Integer> list = new ArrayList<Integer>();
list.add(1);
list.add(2);
list.add(3);
list.add(4);
list.add(5);
list.add(6);
remove(list, 5);
}
}
2. Delete the specified string from a character list, such as list=[a,b,c,d,e,a],remove "a",list=[b, c, d, e]
import java.util.ArrayList;
public class ArrayListRemove {
public static void remove(ArrayList<String> list, String target){
int size = list.size();
for(int i = size - 1; i >= 0; i--){
String item = list.get(i);
if(target.equals(item)){
list.remove(item);//String when the object is removed
}
}
System.out.println(list);
}
public static void main(String[] args) {
ArrayList<String> list = new ArrayList<String>();
list.add("a");
list.add("b");
list.add("c");
list.add("d");
list.add("e");
list.add("a");
remove(list, "a");
}
}