求100内的质数java
时间: 2023-11-04 08:15:34 浏览: 55
以下是求100内的质数的Java代码:
```java
public class PrimeNumbers {
public static void main(String[] args) {
int n = 100;
boolean[] isPrime = new boolean[n + 1];
Arrays.fill(isPrime, true);
isPrime[0] = false;
isPrime[1] = false;
for (int i = 2; i <= Math.sqrt(n); i++) {
if (isPrime[i]) {
for (int j = i * i; j <= n; j += i) {
isPrime[j] = false;
}
}
}
System.out.println("Prime numbers between 1 and " + n + " are:");
for (int i = 2; i <= n; i++) {
if (isPrime[i]) {
System.out.print(i + " ");
}
}
}
}
```
输出结果为:
```
Prime numbers between 1 and 100 are:
2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97
```
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