Question

Вставить по одному элементу перед всеми элементами одномерного массива, кратными 5. Массив сформировать через датчик случайных чисел.

Answer 1

Программа вставляет перед элементом, кратным 5, элемент со значением 99 (чтобы его было видно среди прочих из диапазона [1..50] )

const
  nm = 20;

var
  i, j, n, nn: integer;
  a: array[1..nm] of integer;

begin
  n := nm div 2;
  nn := n;
  Randomize;
  Writeln('*** Исходный массив ***');
  for i := 1 to n do
  begin
    a[i] := Random(50) + 1;  { [1..50] }
    Write(a[i]:3)
  end;
  for i := n downto 1 do
  begin
    if a[i] mod 5 = 0 then begin
      nn := nn + 1;
      for j := nn downto i do a[j] := a[j - 1];
      a[i] := 99
    end
  end;
  Writeln(#13#10, '*** Массив-результат ***');
  for i := 1 to nn do Write(a[i]:3);
  Writeln
end.

*** Исходный массив ***
 23 22 27 16 45 42 15 13 27 31
*** Массив-результат ***
 23 22 27 16 99 45 42 99 15 13 27 31

Answer 2

Task: Insert an Element Before Each Element in a One-Dimensional Array that is a Multiple of 5

To accomplish this task, you can use JavaScript to create a one-dimensional array and then insert an element before each element in the array that is a multiple of 5.

Here's a step-by-step guide to achieve this:

1. Create a One-Dimensional Array Using a Random Number Generator: - Use JavaScript to create a one-dimensional array using a random number generator.

   var arr = [];
   for (var i = 0; i < 10; i++) {
       arr.push(Math.floor(Math.random() * 100) + 1); // Generate random numbers between 1 and 100
   }
   console.log(arr);
   

Source: [JavaScript | MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript)

2. Insert an Element Before Each Element in the Array that is a Multiple of 5: - Iterate through the array and insert an element before each element that is a multiple of 5.

   for (var i = 0; i < arr.length; i++) {
       if (arr[i] % 5 === 0) {
           arr.splice(i, 0, "newElement"); // Insert "newElement" before the current element
           i++; // Increment i to skip the next original element
       }
   }
   console.log(arr);
   

Source: [JavaScript | MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript)

By following these steps, you can create a one-dimensional array and insert an element before each element in the array that is a multiple of 5.