给你一个整数数组 nums。
对于任意正整数 x,定义以下序列:
p0 = xpi+1 = popcount(pi),对于所有 i >= 0,其中 popcount(y) 表示整数 y 的二进制表示中 1 的个数。这个序列最终会收敛到值 1。
popcount-depth(位计数深度)定义为满足 pd = 1 的最小整数 d >= 0。
例如,当 x = 7(二进制表示为 "111")时,该序列为:7 → 3 → 2 → 1,因此 7 的 popcount-depth 为 3。
此外,给定一个二维整数数组 queries,其中每个 queries[i] 可以是以下两种类型之一:
[1, l, r, k] - 计算在区间 [l, r] 中,满足 nums[j] 的 popcount-depth 等于 k 的索引 j 的数量。[2, idx, val] - 将 nums[idx] 更新为 val。返回一个整数数组 answer,其中 answer[i] 表示第 i 个类型为 [1, l, r, k] 的查询的结果。
示例 1:
输入: nums = [2,4], queries = [[1,0,1,1],[2,1,1],[1,0,1,0]]
输出: [2,1]
解释:
i |
queries[i] |
nums |
binary(nums) |
popcount- depth |
[l, r] |
k |
有效nums[j] |
更新后的nums |
答案 |
|---|---|---|---|---|---|---|---|---|---|
| 0 | [1,0,1,1] | [2,4] | [10, 100] | [1, 1] | [0, 1] | 1 | [0, 1] | — | 2 |
| 1 | [2,1,1] | [2,4] | [10, 100] | [1, 1] | — | — | — | [2,1] | — |
| 2 | [1,0,1,0] | [2,1] | [10, 1] | [1, 0] | [0, 1] | 0 | [1] | — | 1 |
因此,最终 answer 为 [2, 1]。
示例 2:
输入:nums = [3,5,6], queries = [[1,0,2,2],[2,1,4],[1,1,2,1],[1,0,1,0]]
输出:[3,1,0]
解释:
i |
queries[i] |
nums |
binary(nums) |
popcount- depth |
[l, r] |
k |
有效nums[j] |
更新后的nums |
答案 |
|---|---|---|---|---|---|---|---|---|---|
| 0 | [1,0,2,2] | [3, 5, 6] | [11, 101, 110] | [2, 2, 2] | [0, 2] | 2 | [0, 1, 2] | — | 3 |
| 1 | [2,1,4] | [3, 5, 6] | [11, 101, 110] | [2, 2, 2] | — | — | — | [3, 4, 6] | — |
| 2 | [1,1,2,1] | [3, 4, 6] | [11, 100, 110] | [2, 1, 2] | [1, 2] | 1 | [1] | — | 1 |
| 3 | [1,0,1,0] | [3, 4, 6] | [11, 100, 110] | [2, 1, 2] | [0, 1] | 0 | [] | — | 0 |
因此,最终 answer 为 [3, 1, 0] 。
示例 3:
输入:nums = [1,2], queries = [[1,0,1,1],[2,0,3],[1,0,0,1],[1,0,0,2]]
输出:[1,0,1]
解释:
i |
queries[i] |
nums |
binary(nums) |
popcount- depth |
[l, r] |
k |
有效nums[j] |
更新后的nums |
答案 |
|---|---|---|---|---|---|---|---|---|---|
| 0 | [1,0,1,1] | [1, 2] | [1, 10] | [0, 1] | [0, 1] | 1 | [1] | — | 1 |
| 1 | [2,0,3] | [1, 2] | [1, 10] | [0, 1] | — | — | — | [3, 2] | |
| 2 | [1,0,0,1] | [3, 2] | [11, 10] | [2, 1] | [0, 0] | 1 | [] | — | 0 |
| 3 | [1,0,0,2] | [3, 2] | [11, 10] | [2, 1] | [0, 0] | 2 | [0] | — | 1 |
因此,最终 answer 为 [1, 0, 1] 。
提示:
1 <= n == nums.length <= 1051 <= nums[i] <= 10151 <= queries.length <= 105queries[i].length == 3 或 4
queries[i] == [1, l, r, k] 或queries[i] == [2, idx, val]0 <= l <= r <= n - 10 <= k <= 50 <= idx <= n - 11 <= val <= 1015