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Questions and Answers
What will the following code output? for (let i = 0; i < 3; i++) { alert(i); }
What will the following code output? for (let i = 0; i < 3; i++) { alert(i); }
In a FOR loop, what does the step parameter determine?
In a FOR loop, what does the step parameter determine?
What is the result of executing the following code? let sum = 0; for (let i = 1; i < 6; i++) { sum = sum + i; } console.log(sum);
What is the result of executing the following code? let sum = 0; for (let i = 1; i < 6; i++) { sum = sum + i; } console.log(sum);
How many times will the following FOR loop run? for (let i = 10; i < 20; i++) { console.log(i); }
How many times will the following FOR loop run? for (let i = 10; i < 20; i++) { console.log(i); }
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What will be the output of this code? let count = 0; for (let i = 1; i < 10; i++) { if (i % 3 == 0) { count = count + 1; } } console.log(count);
What will be the output of this code? let count = 0; for (let i = 1; i < 10; i++) { if (i % 3 == 0) { count = count + 1; } } console.log(count);
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What does the continue statement do within a loop?
What does the continue statement do within a loop?
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What will the following code log to the console? for (let i = 0; i < 10; i = i + 2) { console.log(i); }
What will the following code log to the console? for (let i = 0; i < 10; i = i + 2) { console.log(i); }
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Which of the following describes the behavior of a nested loop?
Which of the following describes the behavior of a nested loop?
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Study Notes
Programming Fundamentals (FOR)
- FOR loops: Used for a known number of iterations.
- Summation algorithm: Calculates the sum of a series of numbers.
- Count algorithm: Determines the number of occurrences of a condition.
- Average algorithm: Computes the average of a dataset.
- Maximum/Minimum value: Locates the largest or smallest value in a dataset.
-
breakstatement: Terminates a loop prematurely. -
continuestatement: Skips the remaining code within the current iteration of a loop.
FOR Loop Structure
-
Syntax:
for (begin; condition; step) { loop body } -
Example (JavaScript):
for (let i = 0; i < 3; i++) { alert(i); }
Flowcharts
- Representation of the program's logic using boxes and arrows.
- FOR loops illustrated via flowcharts showing initiation, condition checks, and execution of the loop body. Shows when the loop ends.
PHP Example
- Illustrative examples of the FOR loop in PHP. Also showing the
breakstatement usage. Exemplifies similar logic and flow within the PHP programming language.
Practical Exercises
- Exercises to practice writing FOR loops to do tasks like calculating sums, counts, etc.. Are given in a programming environment.
Comparison
- Performance comparisons between functions (e.g.,
myFn1,myFn2), showing how execution time varies based on code structure. Aimed at highlighting the efficiency of different coding approaches.
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Description
Test your understanding of the fundamentals of programming with a focus on FOR loops. This quiz covers loop structures, algorithms for summation, counting, averaging, and finding maximum/minimum values. Gain insights into flowchart representation and see implementations in languages like JavaScript and PHP.
