public class Solution extends Object
2121 - Intervals Between Identical Elements.
Medium
You are given a 0-indexed array of n integers arr.
The interval between two elements in arr is defined as the absolute difference between their indices. More formally, the interval between arr[i] and arr[j] is |i - j|.
Return an array intervals of length n where intervals[i] is the sum of intervals between arr[i] and each element in arr with the same value as arr[i]_._
Note: |x| is the absolute value of x.
Example 1:
Input: arr = [2,1,3,1,2,3,3]
Output: [4,2,7,2,4,4,5]
Explanation:
Index 0: Another 2 is found at index 4. |0 - 4| = 4
Index 1: Another 1 is found at index 3. |1 - 3| = 2
Index 2: Two more 3s are found at indices 5 and 6. |2 - 5| + |2 - 6| = 7
Index 3: Another 1 is found at index 1. |3 - 1| = 2
Index 4: Another 2 is found at index 0. |4 - 0| = 4
Index 5: Two more 3s are found at indices 2 and 6. |5 - 2| + |5 - 6| = 4
Index 6: Two more 3s are found at indices 2 and 5. |6 - 2| + |6 - 5| = 5
Example 2:
Input: arr = [10,5,10,10]
Output: [5,0,3,4]
Explanation:
Index 0: Two more 10s are found at indices 2 and 3. |0 - 2| + |0 - 3| = 5
Index 1: There is only one 5 in the array, so its sum of intervals to identical elements is 0.
Index 2: Two more 10s are found at indices 0 and 3. |2 - 0| + |2 - 3| = 3
Index 3: Two more 10s are found at indices 0 and 2. |3 - 0| + |3 - 2| = 4
Constraints:
n == arr.length1 <= n <= 1051 <= arr[i] <= 105| Constructor and Description |
|---|
Solution() |
| Modifier and Type | Method and Description |
|---|---|
long[] |
getDistances(int[] arr) |
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