本题涉及以下知识点的补充:
StringBuilder 和 Scanner 的结合)给定若干行输入,每一行由若干个整数组成,要求对每行的整数进行求和,并输出每行的和。输入数据的行数未知,当输入结束时,程序停止。
1 2 3
4 5 6 7
8 9
6
22
17
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