Given two arrays of integers nums and index. Your task is to create target array under the following rules:
- Initially target array is empty.
- From left to right read nums[i] and index[i], insert at index index[i] the value nums[i] in target array.
- Repeat the previous step until there are no elements to read in nums and index.
Return the target array.
It is guaranteed that the insertion operations will be valid.
Example 1:
Input: nums = [0,1,2,3,4], index = [0,1,2,2,1]
Output: [0,4,1,3,2]
Explanation:
nums index target
0 0 [0]
1 1 [0,1]
2 2 [0,1,2]
3 2 [0,1,3,2]
4 1 [0,4,1,3,2]
Example 2:
Input: nums = [1,2,3,4,0], index = [0,1,2,3,0]
Output: [0,1,2,3,4]
Explanation:
nums index target
1 0 [1]
2 1 [1,2]
3 2 [1,2,3]
4 3 [1,2,3,4]
0 0 [0,1,2,3,4]
Example 3:
Input: nums = [1], index = [0]
Output: [1]
Constraints:
- 1 <= nums.length, index.length <= 100
- nums.length == index.length
- 0 <= nums[i] <= 100
- 0 <= index[i] <= i
Solution in python:
class Solution:
def createTargetArray(self, nums: List[int], index: List[int]) -> List[int]:
result = []
for i in range(len(nums)):
result.insert(index[i], nums[i])
return result
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