题解 | 不重复数字
不重复数字
https://www.nowcoder.com/practice/38532b5539164242b4252352be8749ab
n = int(input())
for i in range(n):
N = int(input())
se = set()
num = []
li = list(map(int,input().split()))
for i in li:
if i not in se:
se.add(i)
num.append(i)
for i in num:
print(i,end=" ")
print()