Java: Count the number of prime numbers less than a given positive number
Count Primes Below Number
Write a Java program to count the number of prime numbers less than a given positive number.
Sample Solution:
Java Code:
Sample Output:
Input an integer: 25 The number of prime numbers: 9
Flowchart:
For more Practice: Solve these Related Problems:
- Write a Java program to count the number of prime numbers less than a given number using the Sieve of Eratosthenes.
- Write a Java program to count primes below a number using recursion with memoization.
- Write a Java program to count primes by filtering a range with Java streams and lambda expressions.
- Write a Java program to implement a segmented sieve algorithm and compare its prime count with the classic sieve.
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