将迭代中的当前元素与数组中的所有后续元素进行比较 - for 循环

Question

int[] num = new int[] { 20, 19, 8, 9, 12 };

例如上面的数组，我需要比较：

• 元素 20 与元素 19、8、9、12
• 元素 19 与 8、9、12
• 元素 8 与 9、12
• 元素 9 和 12

Answer 1

两个循环：

// Go through each element in turn (except the last one)
for (int i = 0; i < num.Length - 1; i++)
{
    // Start at the element after the one we're on, and keep going to the
    // end of the array
    for (int j = i + 1; j < num.Length; j++)
    {
        // num[i] is the current number you are on.
        // num[j] is the following number you are comparing it to
        // Compare num[i] and num[j] as you want
    }
}