C语言Matrix编程题——[Arrays]D. Liang 6.5 Printing distinct numbers

[Arrays]D. Liang 6.5 Printing distinct numbers

Description:

Write a program that reads in n integers and displays distinct numbers (ie., if a number appears multiple times, it is displayed only once).

Input：

The first line is a positive integer t for the number of test cases.
Each test case contains two lines. The first line is an integer n (0<n<=100). The second line contains n integers.

Output:

For each test case, outputs the distinct numbers in order in which they were read, seperated by one blank.

Sample Input:

2
3
1 2 1
4
2 1 2 1

Sample Output:

1 2
2 1

Programme:

//Date:2020/4/26
//Author:Kamenrider Justice
#include<stdio.h>
int main()
{
int n,i,j,k,num;//n是运行的次数,num是输入的个数
scanf("%d",&n);
int number[100];//储存输入的数
int flag;
//判断是否有重复的数 
for(i=0;i<n;i++)
{
scanf("%d",&num);
for(j=0;j<num;j++)//储存数到数组
{
scanf("%d ",&number[j]);
}
printf("%d",number[0]);
for(j=1;j<num;j++)
{
flag=1;//使flag回到初始状态
for(k=0;k<j;k++)
{
if(number[j]==number[k])
{
flag=0;
}
}
if(flag)//如果没有重复的就输出，可保证顺序和输入时一致
{
printf(" %d",number[j]);
}
}
printf("n");
}
return 0;
}

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