英文:
How to compare two array list of same size and print difference when both are not same in java
问题
我已经使用下面的程序来比较两个数组列表，但我不想错过这样一种情况，即当两个数组列表的大小相同但内容不同。另外，下面的代码可以被简化吗？
ArrayList<String> firstList = new ArrayList<String> ( Arrays.asList("Cake", "pizza", "pasta") );
ArrayList<String> secondList = new ArrayList<String> ( Arrays.asList("Chocolate", "fruits", "pancake"));
if (!firstList.equals(secondList)) {
if (firstList.size() > secondList.size()) {
firstList.removeAll(secondList);
SOP("差异：" + firstList+ "---------不匹配的总组数----------"+ firstList.size());
} else if (firstList.size() < secondList.size()) {
secondList.removeAll(firstList);
SOP("差异：" + secondList+ "---------不匹配的总组数----------" + secondList.size());
}
} else {
SOP("两者相同");
}
英文:
I have used below program two compare two Array list, But I don't want to miss the condition when both array list are same in size but content different values.Also is below code can be minimize.
ArrayList<String> firstList = new ArrayList<String> ( Arrays.asList("Cake", "pizza", "pasta") );
ArrayList<String> secondList = new ArrayList<String> ( Arrays.asList("Chocolate", "fruits", "pancake"));
if (!firstList.equals(secondList)) {
if (firstList.size() > secondList.size()) {
firstList.removeAll(secondList);
SOP("Differance" + firstList+ "---------Total Number of Group mismatch----------"+ firstList.size());
} else if (firstList.size() < secondList.size()) {
secondList.removeAll(firstList);
SOP("Differance" + secondList+ "---------Total Number of Group mismatch----------" + secondList.size());
}
} else {
SOP("Both are same");
}
答案1
得分: 1
如果您想使用第三方工具，可以直接使用以下代码：
System.out.println(CollectionUtils.disjunction(firstList, secondList));
为了最小化使用，您可以像下面这样使用单个第三方列表：
public static void main(String[] args) {
ArrayList<String> firstList = new ArrayList<String>(Arrays.asList("Cake", "pizza", "pasta", "fruits"));
ArrayList<String> secondList = new ArrayList<String>(Arrays.asList("Chocolate", "fruits", "pancake"));
List<String> result = new ArrayList<String>();
add(secondList, result);
add(firstList, result);
System.out.println(result);
}
public static void add(ArrayList<String> list, List<String> result) {
for (String string : list) {
if (result.contains(string)) {
result.remove(string);
} else {
result.add(string);
}
}
}
或者，如果您愿意修改其中一个列表，可以迭代一个列表并检查另一个列表中的数据：
for (String string : firstList) {
if (secondList.contains(string)) {
secondList.remove(string);
} else {
secondList.add(string);
}
}
System.out.println(secondList);
希望这些代码对您有帮助。
英文:
If u want to use a Third party utility u can directly use
System.out.println(CollectionUtils.disjunction(firstList, secondList));
To minimize simple use a single third list like below
public static void main(String[] args) {
ArrayList<String> firstList = new ArrayList<String> ( Arrays.asList("Cake", "pizza", "pasta", "fruits") );
ArrayList<String> secondList = new ArrayList<String> ( Arrays.asList("Chocolate", "fruits", "pancake"));
List<String> result = new ArrayList<String>();
add(secondList, result);
add(firstList, result);
System.out.println(result);
}
public static void add(ArrayList<String> list, List<String> result) {
for (String string : list) {
if(result.contains(string)) {
result.remove(string);
}else {
result.add(string);
}
}
}
or if u are okay with modifying ur List (any one )
you can iterate one list and check teh data in another list
for (String string : firstList) {
if(secondList.contains(string)) {
secondList.remove(string);
}else {
secondList.add(string);
}
}
System.out.println(secondList);
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