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Finding a random array for a specific value

Hi, I was told: "Write a code that determines if a value such as '5' is contained in the array from task 7 (random array), going backwards through the array, starting from the end, and comparing the search for the value with the values ​​in the array. After search, if a value is found, print "Value found" otherwise print "Value not found". "

I understand creating a random array, but I am obsessed with how to work with it through it and find a specific value.

Here is the code so far

class Program
{
    static void Main(string[] args)
    {
        int[] myArray = new int[10];
        Random rand = new Random();

        for (int i = 0; i < myArray.Length; i++)
        {
            myArray[i] = rand.Next(19);
        }

    }
}

}

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2 answers


Use a loop starting with the largest and smallest index.



 bool found = false;
 for (int i = myArray.Length - 1; i >=0 ; i--) 
     if(myArray[i] == 5)
        found = true;
 if(found)
 {

 }
 else
 {

 }
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To go back, just use a for loop with an iterator in i--

.

for (int i = myArray.Length - 1; i >= 0; i---)
{
    if(// Check if myArray[i] equals the value to find)
    {
         // If it is the case, you can get out from the for loop with break
         break;
    }
}

The cycle is for

divided into 4 parts:



for (initializer; condition; iterator)
    body
  • initializer

    It is performed prior to the first iteration of the loop (here you will want to start with the last index in the array: myArray.Length - 1

    )
  • condition

    is evaluated for each iteration, if that condition is true then it goes to 3 (you want to stay in the for

    while loop i >= 0

    ), otherwise it will terminate the loopfor

  • body

    is performed for each iteration satisfying the condition
  • In progress iterator

    (here is how you want to go backwards you want to decrease i

    )
  • Then go back to 2
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