java - 将 ArrayList 字符串转换为字符？

Question

所以我有一个由用户估算的字符串数组列表。我还有一个二维字符数组:private char[][] puzzle；我需要帮助将字符串更改为字符，以便我可以将它们输入到二维数组中，任何人都可以帮忙吗？

public class WordSearchPuzzle
{
    private char[][] puzzle ;
    private ArrayList<String> puzzleWords ;
    private int letterCount = 0 ;
    private int gridDimensions;

    public WordSearchPuzzle(ArrayList<String> userSpecifiedWords)
    {
        this.puzzleWords = userSpecifiedWords ;

    }

    private void createPuzzleGrid()
    {
        int i;
        for(i = 0; i < puzzleWords.size() ; i++){
            letterCount = puzzleWords.size() + letterCount ;
        }
        gridDimensions = letterCount * 2;
        puzzle = new char[gridDimensions][gridDimensions] ;
    }

Answer 1

将每个字符串更改为 charArray .

for(String item : ArrayList){
  item.toCharArray();
}