java去除重复数字

Question

给定数组为：{1,5,6,2,7,1,5,2,}
要求对数组去重后输出

Answer 1

 public static void main(String[] args) {
    int[] a = {1, 5, 6, 2, 7, 1, 5, 2};
    int[] b = new int[a.length];
    int i, n = 0;
    for (int x : a) {
      for (i = 0; i < n; i++)
        if (b[i] == x)
          break;
      if (i == n) {
        b[n++] = x;
      }
    }
    for (i=0;i<n;i++)
      System.out.println(b[i]);
  }