如何在Java中将String数组转换为char数组 [英] How to convert a String array to char array in Java

问题描述

我们得到一个字符串数组，我们需要一个char[]，即所有字符串中所有字符的数组例如:

We are given an array of Strings and what we require is a char[], i.e, array of all characters in all the Strings For example:

输入:[我，爱，你]

输出:[i, l, o, v, e, y, o, u]

output: [i, l, o, v, e, y, o, u]

首先我制作了一个数组数组.

First I made an array of arrays.

然后我找到了所需的 char[] 数组的长度.

Then I have found the length of the required char[] array.

到目前为止，我已经尝试了以下方法:

I have tried the following so far:

char[][] a1 = new char[str.length][];

for(int i =0;i<str.length;i++){
    a1[i]=str[i].toCharArray();
}

int total=0;
for(int i =0;i<str.length;i++){
    total = total + a1[i].length;
}

char[] allchar = new char[total];

for(int i=0;i<str.length;i++){
    //NOW HERE I WANT TO MERGE ALL THE char[] ARRAYS TOGETHER.
//HOW SHOULD I DO THIS?
}

推荐答案

String[] sArray = {"i", "love", "you"};
    String s = "";
    for (String n:sArray)
        s+= n;
    char[] c = s.toCharArray();

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