You are given an integer array nums and an integer k.
Your task is to determine whether it is possible to partition all elements of nums into one or more groups such that:
k elements.nums must be assigned to exactly one group.Return true if such a partition is possible, otherwise return false.
\n
Example 1:
\n\nInput: nums = [1,2,3,4], k = 2
\n\nOutput: true
\n\nExplanation:
\n\nOne possible partition is to have 2 groups:
\n\n[1, 2][3, 4]Each group contains k = 2 distinct elements, and all elements are used exactly once.
Example 2:
\n\nInput: nums = [3,5,2,2], k = 2
\n\nOutput: true
\n\nExplanation:
\n\nOne possible partition is to have 2 groups:
\n\n[2, 3][2, 5]Each group contains k = 2 distinct elements, and all elements are used exactly once.
Example 3:
\n\nInput: nums = [1,5,2,3], k = 3
\n\nOutput: false
\n\nExplanation:
\n\nWe cannot form groups of k = 3 distinct elements using all values exactly once.
\n
Constraints:
\n\n1 <= nums.length <= 1051 <= nums[i] <= 1051 <= k <= nums.length给你一个整数数组 nums 和一个整数 k。
请你判断是否可以将 nums 中的所有元素分成一个或多个组，使得：
k 个元素。nums 中的每个元素 必须 被分配到 恰好一个 组中。如果可以完成这样的分组，返回 true；否则，返回 false。
\n\n
示例 1：
\n\n输入： nums = [1,2,3,4], k = 2
\n\n输出： true
\n\n解释：
\n\n一种可能的分组方式是分成 2 组：
\n\n[1, 2][3, 4]每个组包含 k = 2 个不同的元素，并且所有元素都被恰好使用一次。
示例 2：
\n\n输入： nums = [3,5,2,2], k = 2
\n\n输出： true
\n\n解释：
\n\n一种可能的分组方式是分成 2 组：
\n\n[2, 3][2, 5]每个组包含 k = 2 个不同的元素，并且所有元素都被恰好使用一次。
示例 3：
\n\n输入： nums = [1,5,2,3], k = 3
\n\n输出： false
\n\n解释：
\n\n无法用所有值恰好一次性组成含有 k = 3 个不同元素的组。
\n\n
提示：
\n\n1 <= nums.length <= 1051 <= nums[i] <= 1051 <= k <= nums.lengthk you need to form.",
"Each group must contain exactly k distinct elements.",
"If any element appears more times than the number of groups groups, it cannot be placed uniquely in each group.",
"Use a frequency map freq to count the occurrences of each element.",
"If the total number of elements n is not divisible by k, partitioning is impossible."
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