How to find variance between two rows in array

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Sarumathi C 2018-3-19

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https://ww2.mathworks.cn/matlabcentral/answers/389146-how-to-find-variance-between-two-rows-in-array

Sir.i found the zeros location of my 1269*100 array structure and the output is 1*1269 array structure.now I need to find the variance between two rows which has the same zero location.example:[1 2 4 4 4 ] is the zeros Location.so from this 3,4,5 row has same zeros location.so I found different between 4th,3rd row and 5th,4th row and store the variance value in 3 rd,4th row .