在字符串列表中添加空格? [英] Adding a whitespace inside a List of strings?
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问题描述
我有一个包含不同单词的字符串 ArrayList
.我想做的是在每个单词之间的列表内添加空格.
我的代码确实打印出带有空格的元素,但是仅作为打印输出,我需要将空格包括在列表中,以便可以将其用作值.
示例输入:你好吗?
,结果: Hi,","",是","","您?
public void getCipher(ArrayList< String> list){字符串regex ="\",\"+"\","+"\";对于(字符串输入:列表){字符串newResult =输入+正则表达式;System.out.print(newResult);}}
解决方案
迭代列表,并使用新字符串更新列表中的每个字符串,如下所示:
公共列表< String>updateStrings(List< String>列表){字符串regex ="\",\"+"\","+"\";for(int i = 0; i< list.size(); i ++){list.set(i,list.get(i)+正则表达式);}返回清单;}
I have an ArrayList
of strings which contains different words. What I am trying to do is to add whitespace inside the list between each word.
My code does print out the elements with whitespace, but as printout only, I need the whitespace to be included in the list so I can use it as a value.
Example input: Hi, how are you?
, result: Hi,", " ", "are", " ", "you?
public void getCipher(ArrayList<String> list) {
String regex = "\", \" " + "\", " + "\"";
for (String input : list) {
String newResult = input + regex;
System.out.print(newResult);
}
}
解决方案
Iterate the list and update each string in it with the new string as shown below:
public List<String> updateStrings(List<String> list) {
String regex = "\", \" " + "\", " + "\"";
for (int i = 0; i < list.size(); i++) {
list.set(i, list.get(i) + regex);
}
return list;
}
import java.util.ArrayList;
import java.util.List;
public class Main {
public static void main(String[] args) {
// Test
List<String> list = new ArrayList<>(List.of("Hello", "World"));
System.out.println(list);
System.out.println(updateStrings(list));
}
static List<String> updateStrings(List<String> list) {
String regex = "\", \" " + "\", " + "\"";
for (int i = 0; i < list.size(); i++) {
list.set(i, list.get(i) + regex);
}
return list;
}
}
Output:
[Hello, World]
[Hello", " ", ", World", " ", "]
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