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如何生成具有以下行爲的二進制矩陣?我遇到了這個solution,但它缺少二進制值的隨機定位。生成固定數目爲1的二進制矩陣
## all rows contain four 1's at random column
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10]
[1,] 1 1 1 0 0 0 0 0 1 0
[2,] 0 0 0 1 1 1 0 0 0 1
[3,] 0 0 0 1 1 0 0 1 1 0
[4,] 0 1 1 0 0 0 1 0 0 1
[5,] 0 1 0 1 0 1 0 1 0 0
'噸(複製(5,樣品(代表(C(1,0),C(4,6))) ,TRUE))'? – A5C1D2H2I1M1N2O1R2T1
就像一個魅力。謝謝! –
如果我想在'2:4'的範圍內爲每一行隨機分配不同數目的'1',那麼怎麼辦?例如'row1'有兩個'1s','row2'有四個'1s'等...... –