What do you understand by nested loop explain Giving one example?

If a loop exists inside the body of another loop, it’s called a nested loop. Here’s an example of the nested for loop. // outer loop for (int i = 1; i <= 5; ++i) { // codes // inner loop for(int j = 1; j <=2; ++j) { // codes } .. } Here, we are using a for loop inside another for loop.

What is a good use for nested for loops?

Nested loops are useful when for each pass through the outer loop, you need to repeat some action on the data in the outer loop. For example, you read a file line by line and for each line you must count how many times the word “the” is found.

How does nested for loop work in Python?

What is a Nested Loop in Python? A nested loop is a loop inside the body of the outer loop. The inner or outer loop can be any type, such as a while loop or for loop. For each iteration of an outer loop the inner loop re-start and completes its execution before the outer loop can continue to its next iteration.

Are nested for loops bad Python?

Foreword. Nested loops are not a bad thing per se. They are only bad, if there are used for problems, for which better algorithm have been found (better and bad in terms of efficiency regarding the input size). Sorting of a list of integers for example is such a problem.

Are nested loops bad?

Nested loops are frequently (but not always) bad practice, because they’re frequently (but not always) overkill for what you’re trying to do. In many cases, there’s a much faster and less wasteful way to accomplish the goal you’re trying to achieve.

How do you run a nested loop in Python?

Python Nested for Loop

1. The outer for loop uses the range() function to iterate over the first ten numbers.
2. The inner for loop will execute ten times for each outer number.
3. In the body of the inner loop, we will print the multiplication of the outer number and current number.

How would you explain a nested for loop?

A nested loop is a loop within a loop, an inner loop within the body of an outer one. How this works is that the first pass of the outer loop triggers the inner loop, which executes to completion. Then the second pass of the outer loop triggers the inner loop again. This repeats until the outer loop finishes.

What is meant by nested looping in programming?

A nested loop is a logical structure used in computer programming and coding. It is characterized by two or more repeating statements that are placed in a “nested” form, which is to say that one “loop” or repeating command is situated within the body of the other.

Why are nested for loops used in Java?

Of course, it is inner for loop within the body of an outer one. nested for loop is used when we are trying to iterate multiple arrays which are dependent on each other. nested loop took more time to execute than loops in sequence.

How does nested for loop work?

Nested loops work by fetching the result from the driving row source and querying the probe row source for each row from the driving row source. It’s basically a nested FOR loop, hence the name.