Build Array from Permutation LeetCode solution in Java

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class Solution {
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  public int[] buildArray(int[] nums) {
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    int n = nums.length;
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    for (int i = 0; i < n; i++) nums[i] = nums[i] + n * (nums[nums[i]] % n);
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    for (int i = 0; i < n; i++) nums[i] = nums[i] / n;
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    return nums;
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  }
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}