class Demo3Array { //反转
public static void main(String[] args) {
int[] arr = {11,22,33,44,55};
print(arr);
System.out.println();
reverseArray(arr);
print(arr);
}
public static void reverseArray(int[] arr) {
for (int i = 0; i < arr.length/2; i++) {
int temp = arr[i];
arr[i] = arr[arr.length-1-i];
arr[arr.length-1-i] = temp;
}
}
public static void print(int[] arr) {
for (int i = 0; i < arr.length; i++) {
System.out.print(arr[i] + " ");
}
}
} |
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