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奇偶位互换

Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 13894    Accepted Submission(s): 9874


Problem Description
给定一个长度为偶数位的0,1字符串,请编程实现串的奇偶位互换。
 

Input
输入包含多组测试数据;
输入的第一行是一个整数C,表示有C测试数据;
接下来是C组测试数据,每组数据输入均为0,1字符串,保证串长为偶数位(串长<=50)。
 

Output
请为每组测试数据输出奇偶位互换后的结果;
每组输出占一行。
 

Sample Input
2 0110 1100
 

Sample Output
1001 1100
 

Author
yifenfei
 

Source
 

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