1
package com.javarush.task.task08.task0817;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
/*
Нам повторы не нужны
*/
public class Solution {
public static Map<String, String> createMap() {
Map<String, String> map = new HashMap<>();
map.put("Jon1", "James1");
map.put("Jon2", "James2");
map.put("Jon3", "James3");
map.put("Jon4", "James4");
map.put("Jon5", "James5");
map.put("Jon6", "James6");
map.put("Jon7", "James7");
map.put("Jon8", "James8");
map.put("Jon9", "James9");
map.put("Jon10", "James1");
return map;
}
public static void removeTheFirstNameDuplicates(Map<String, String> map) {
int count = 0;
ArrayList<String> values = new ArrayList<>();
for (Map.Entry<String, String> pair : map.entrySet()) {
for (Map.Entry<String, String> pair1 : map.entrySet()) {
if (pair.getValue().equals(pair1.getValue())) {
values.add(pair.getValue());
count++;
}
}
if (count > 1) {
for(String s : values)
removeItemFromMapByValue(map, s);
}
else values.clear();
}
}
public static void removeItemFromMapByValue(Map<String, String> map, String value) {
Map<String, String> copy = new HashMap<>(map);
for (Map.Entry<String, String> pair : copy.entrySet()) {
if (pair.getValue().equals(value)) {
map.remove(pair.getKey());
}
}
}
public static void main(String[] args) {
}
}