How to usethe Trial Division Method in JavaScript in Javascript
In this approach, we will check divisibility for each number in the interval. In the below program, the range of numbers is taken as input and stored in the variables ‘a’ and ‘b’. Then using a for-loop, the numbers between the interval of a and b are traversed.
Example:
Javascript
let a, b, i, j, flag; a = 2 b = 11 for (i = a; i <= b; i++) { if (i == 1 || i == 0) continue ; // flag variable to tell // if i is prime or not flag = 1; for (j = 2; j <= i / 2; ++j) { if (i % j == 0) { flag = 0; break ; } } // flag = 1 means i is prime // and flag = 0 means i is not prime if (flag == 1) console.log(i); } |
2 3 5 7 11
Time Complexity: O(N2), Where N is the difference between the range
Auxiliary Space: O(1)
JavaScript Program to Print All Prime Numbers in an Interval
In this article, we will explore a JavaScript program to find and print all prime numbers within a given range. A prime number is a natural number greater than 1, which is only divisible by 1 and itself. The first few prime numbers are 2 3 5 7 11 13 17 19 23…, The program efficiently identifies and displays prime numbers within the specified range.
There are several methods that can be used to Print All Prime Numbers in an Interval.
- Using Trial Division Method
- Optimized Solution
- Using the Sieve of Eratosthenes” algorithm
We will explore all the above methods along with their basic implementation with the help of examples.
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