int mid = (len & 1) == 0 ? len >> 1 : (len >> 1) + 1;
时间: 2024-05-31 14:08:26 浏览: 19
/ 2);
This code snippet calculates the index of the middle element of an array or string, where "len" is the length of the array or string. The variable "mid" will hold the index of the middle element. If the length of the array or string is even, then "mid" will hold the index of the element to the left of the exact middle. For example, if the length is 6, the middle index would be 2. If the length is odd, then "mid" will hold the index of the exact middle element. For example, if the length is 7, the middle index would be 3.
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int mid = (len & 1) == 0 ? len >> 1 : (len >> 1) + 1;请详细解释一下这段java代码
/ 2);
This line of code calculates the middle index of an array or string.
"len" is the length of the array or string.
Dividing the length by 2 gives the index of the middle element if the length is an odd number, or the index of the element just to the left of the middle if the length is an even number.
This index is then assigned to the variable "mid" for use in other parts of the code.
int mid = (len & 1) == 0 ? len >> 1 : (len >> 1) + 1;请用中文详细解释一下这段java代码
/ 2);
This line of code calculates the index of the middle element in an array or string of length "len".
The variable "mid" is assigned the value of "len / 2", which is the integer division of "len" by 2. This means that if "len" is an odd number, "mid" will be the index of the middle element, and if "len" is an even number, "mid" will be the index of the element to the left of the middle.
For example, if "len" is 5, "mid" will be 2, which is the index of the middle element. If "len" is 6, "mid" will be 3, which is the index of the element to the left of the middle.
The "mid" variable is often used in algorithms that involve dividing an array or string into two parts, such as binary search or merge sort.
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