❓ كيف تطبع طول المصفوفة؟
How do you print the array length?
How do you print the array length?
int[] a = {1, 2, 3, 4};
System.out.println( /* ? */ );❓ هل يعدّل for-each عناصر المصفوفة؟
Does for-each modify elements?
Does for-each modify elements?
int[] a = {1, 2, 3};
for (int x : a) { x *= 2; }
System.out.println(a[1]);👍1
❓ ما قيمة count بعد استخدام continue؟
What is count after using continue?
What is count after using continue?
int count = 0;
for (int i = 0; i < 5; i++) {
if (i % 2 == 0) continue;
count += i;
}
System.out.println(count);
❓ هل a == b صحيح؟
Is a == b true?
Is a == b true?
String a = new String("hi");
String b = "hi";
System.out.println(a == b);👍1
❓ Switch على String بدون break بعد "two"؟
Switch on String (no break after "two")?
Switch on String (no break after "two")?
String s = "two";
switch (s) {
case "one": System.out.print(1); break;
case "two": System.out.print(2);
default: System.out.print(0);
}
❓ تمرير المصفوفات للميثود: ماذا يُطبع؟
Passing arrays to methods: what prints?
Passing arrays to methods: what prints?
void change(int[] arr) {
arr[0] = 99;
arr = new int[]{7,7,7};
}
int[] x = {1,2,3};
change(x);
System.out.println(x[0]);❓ تأثير i++ داخل شرط while؟
Effect of i++ in while condition?
Effect of i++ in while condition?
int i = 0;
while (i++ < 3) { }
System.out.println(i);
❓ كم عدد الزيادات؟
How many increments occur?
How many increments occur?
int c = 0;
for (int i = 0; i < 3; i++) {
for (int j = 0; j <= i; j++) {
c++;
}
}
System.out.println(c);
❤1
❓ كيف يعمل fall-through عندما يطابق case 1؟
How does fall-through work here?
How does fall-through work here?
int d = 1;
switch (d) {
case 0: d += 2;
default: d += 3;
case 1: d += 4;
}
System.out.println(d);
❓ أي استدعاء يُفضَّل مع varargs؟
Which overload is chosen with varargs?
Which overload is chosen with varargs?
static void m(int x) { System.out.print("exact"); }
static void m(int... x) { System.out.print("varargs"); }
m(5);👍1