practivceAlgorithm/codeforce

[codeforce][Python] #690 A. Favorite Sequence

findTheValue 2021. 12. 7. 22:11

좌우영역에서 검사하는 것으로 투포인터를 이용했습니다.

 

import sys
input = sys.stdin.readline
 
 
for test in range(int(input())):
    n = int(input())
    arr = list(map(int, input().split()))
    left, right = 0, n - 1
    answer = []
    while left <= right:
        answer.append(arr[left])
        if left == right:
            break
        answer.append(arr[right])
        left += 1
        right -= 1
    print(*answer)