＞＞＞和＞＞区别

Posted 2021-07-04 红桃xin

>>>和>>区别

• >>>
• 2. 比较>>
• 3. 参考链接
• 4. 每博一首

>>>

向右移动一位，也可以理解为 除以2取整
比如：

          1: 00000000 00000000 00000000 00000001
[phone]: 01111111 11111111 11111111 11111111
================================================
-2147483648: 10000000 00000000 00000000 00000000  // Overflow
/2
================================================
-1073741824: 11000000 00000000 00000000 00000000  // Signed divide, same as >> 1.

java中PriorityQueue中的add()逻辑

    @SuppressWarnings("unchecked")
    private void siftUpComparable(int k, E x) {
        Comparable<? super E> key = (Comparable<? super E>) x;
        while (k > 0) {
            int parent = (k - 1) >>> 1;
            Object e = queue[parent];
            if (key.compareTo((E) e) >= 0)
                break;
            queue[k] = e;
            k = parent;
        }
        queue[k] = key;
    }

2. 比较>>

The difference between >> and >>> would only show up when shifting negative numbers. The >> operator shifts a 1 bit into the most significant bit if it was a 1, and the >>> shifts in a 0 regardless.

当操作负数 的时候会有区别

3. 参考链接

• stackOverFlow

4. 每博一首

《晓出净慈寺送林子方》杨万里[宋]
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