统计一个数字在排序数组中出现的次数。
示例 1:
输入: nums = [5,7,7,8,8,10], target = 8
输出: 2
示例 2:
输入: nums = [5,7,7,8,8,10], target = 6
输出: 0 提示:
0 <= nums.length <= 105
-109 <= nums[i] <= 109
nums 是一个非递减数组
-109 <= target <= 109
来源:力扣(LeetCode)
链接:https://leetcode-cn.com/problems/zai-pai-xu-shu-zu-zhong-cha-zhao-shu-zi-lcof
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Last updated 4 years ago
func search(_ nums: [Int], _ target: Int) -> Int { guard let first = nums.firstIndex(of: target), let last = nums.lastIndex(of: target) else { return 0 } return last - first + 1 }