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Question
请问如何实现二维数组第一列相同数字的行求平均。
比如下面a是2x7的原始数组，需要最后变成b，就是把第一列相同数字的行求平均 a=[1 2;1 4;2 3;2 5;3 4;3 7;3 1]; % b=[1 3;2 4;3 4]; 谢谢各位大佬！
3 years ago | 1 answer | 0
