for 循环中缺少 return 语句 [英] Missing return statement in for loop
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问题描述
我有一个从数组返回值的 for
循环.
I have a for
loop that returns values from an array.
public static String getPieces(){
for(int y=0; y<=7; y++)
for(int x=0; x<=7; x++)
return piece[x][y];
}
方法中有明确的return语句,每次调用都会返回.为什么说missing return statement
?
There is a return statement clearly in the method that will return every time it is called. Why does it say missing return statement
?
推荐答案
除了 loop
完全没有意义(因为它会返回piece[0][0]),添加一个额外的返回行可能帮助你:
Besides the loop
being completely pointless (because it will return piece[0][0]), adding an extra return line might help you:
public static String getPieces() {
for (int y = 0; y <= 7; y++) {
for (int x = 0; x <= 7; x++) {
return piece[x][y];
}
}
}
既然您说要返回 64 个值,那么您必须返回一个数组.
Since you stated that you want to return 64 values, you'll have to return an array.
public static ArrayList<String> getPieces() {
ArrayList<String> strings = new ArrayList<String>();
for (int y = 0; y <= 7; y++) {
for (int x = 0; x <= 7; x++) {
strings.add(piece[x][y]);
}
}
return strings;
}
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