## Counter in double loop with counting in both internal and external for

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I would like to know if there is a well-known formula for the following way of counting:

```count = 0
for i in range(n):
for j in range(m):
count = count + 1
count = count + 10
```

Cayo

EDIT 1:

Thanks Ernest, you are right, but that is not really the problem. Sorry, I was not clear enough, let me explain better my problem. I don't just want to count, I need use this counter inside the inner loop. I have a 2D flatten array and I want to access just a sub-2D-region of this array. So, actually, what I am doing is:

```count = 0
for i in range(n):
for j in range(m):
big_flatten_array(count) = value
count = count + 1
count = count + 10
```

EDIT 2: It doesn't work just using

```count = i * 10 + j
```

Try checking the values:

```count = 0
for i in range(3):
for j in range():
k = i * 2 + j
vec[k] = count
vec2[k] = i * 10 + j
count = count + 1
count = count + 10
```

And you will see the vec and vec2 are not the same...

Let's consider that the line `count = count + 10` didn't exist, then it would simply be:

```count = i*m + j
```

Consider n = 3, and m = 3 So the count values are like 0, 1, 2, 3, 4 .. once you add the line `count += 10`, you're simply adding multiples of 10 to the count value each time the outer loop finishes.

0, 1, 12, 13, 24, 25... or 0, 1, 10 + 2, 10 + 3, 20 + 4, 20 + 5...

so the expression becomes

```count = (10*i) + (i*m+j)
```

And you can get all the count values like so:

```count = [(10 * i) + (i * m + j) for i in range(n) for j in range(m)]
```

Statement counting in nested loops, count (nested loop) = count (1st iteration of the outer loop) + count (2nd iteration of In the first iteration of the outer loop, there are no iterations of the inner loop. 0 Counter in double loop with counting in both internal and external for Feb 14. 0 Creating meshgrid of scattered Cartesian data for plotting on a sphere Apr 27.

There is really simple solution

```count = n*(10+m)
```

[PDF] count controlled loops, COUNT CONTROLLED. LOOPS. Introduction to Computer. Programming - Python range(0,10,2) # set a start, end and step (or increment) value. # [0,2,4,6, 8] range(1,10,2) Inner loops complete their iterations faster than outer loops. □ To get that are divisible both of the two supplied numbers. □ Extension: print your. 2 Counter in double loop with counting in both internal and external for Feb 14 1 Selenium python webdriver Mar 12 1 Breakdown nested for loops in Python list comprehension that involves string concatenation Oct 15 '19

Let me try. If I understand correctly you just need current (not final) value of `count` inside the loop. So this should do:

```# In the inner loop
count = i * 10 + j
```

Nested for loops for C++, When you "nest" two loops, the outer loop takes control of the number of the movement of the two far-right numbers of a web counter or an odometer: When working with nested loops, the outer loop changes only after the inner loop is� A counting loop was most appropriate. I could have used a sentinel loop, creating a counter (the sentinel) to terminate the loop, but the for wraps this up for you in one convenient statement. For example, modify the previous example: average only the even integers

Counting Loops - Programming C++, I could have used a sentinel loop, creating a counter (the sentinel) to terminate of the output, we can see that we will need two loops, one inside the other. The “ outer” loop will control the number of lines of output, and the “inner” loop will control Ok, we have for line #4, for( int j=1; j <= 2; j++), which will produce 2 stars. It’s common to avoid using a float as a loop counter for that exact reason, common solutions would be: If one extra iteration doesn’t matter, use <= If it does matter, make the condition <=1.0001 instead, or some other value smaller than your increment, so off-by-0.0000000000000000000001 errors don’t matter

Chapter 5: Nested loops, Which loop to use?, The inner loop is nested inside the outer loop. Sample nested loop code For example, you read a file line by line and for each line you must count how many� If the condition is initially false, the body of the loop will not be evaluated at all. Counting Loops. Although every while loop has the same general form, while loops can be used to serve a variety of different purposes. A common form of loop is the counting loop, in which the loop repeats a fixed number of times.

foreach is a loop which iterates through a collection or array one by one, starting from 0 index till the last item of the collection. So, if I have n items in an array. foreach (var item in arr) { }