| 1 | const first_25_primes = firstNPrimes(25); |
| 2 | const sum_of_first_25_primes = sum(&first_25_primes); |
| 3 | |
| 4 | fn firstNPrimes(comptime n: usize) [n]i32 { |
| 5 | var prime_list: [n]i32 = undefined; |
| 6 | var next_index: usize = 0; |
| 7 | var test_number: i32 = 2; |
| 8 | while (next_index < prime_list.len) : (test_number += 1) { |
| 9 | var test_prime_index: usize = 0; |
| 10 | var is_prime = true; |
| 11 | while (test_prime_index < next_index) : (test_prime_index += 1) { |
| 12 | if (test_number % prime_list[test_prime_index] == 0) { |
| 13 | is_prime = false; |
| 14 | break; |
| 15 | } |
| 16 | } |
| 17 | if (is_prime) { |
| 18 | prime_list[next_index] = test_number; |
| 19 | next_index += 1; |
| 20 | } |
| 21 | } |
| 22 | return prime_list; |
| 23 | } |
| 24 | |
| 25 | fn sum(numbers: []const i32) i32 { |
| 26 | var result: i32 = 0; |
| 27 | for (numbers) |x| { |
| 28 | result += x; |
| 29 | } |
| 30 | return result; |
| 31 | } |
| 32 | |
| 33 | test "variable values" { |
| 34 | try @import("std").testing.expectEqual(1060, sum_of_first_25_primes); |
| 35 | } |
| 36 | |
| 37 | // test |