1389. Create Target Array in the Given Order - easy
문제
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.
제한사항
- 1 <= nums.length, index.length <= 100
- nums.length == index.length
- 0 <= nums[i] <= 100
- 0 <= index[i] <= i
입출력 예
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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]
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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]
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Example 3:
Input: nums = [1], index = [0]
Output: [1]
풀이
- Array
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func createTargetArray(nums []int, index []int) []int {
var target []int
for i := 0 ; i < len(nums) ; i++ {
target = append(target, 0)
copy(target[index[i]+1 : ], target[index[i] : ])
target[index[i]] = nums[i]
}
return target
}