[問題] 關於矩陣的元素已回收
假設我處理出一個矩陣
A=
1 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0 2 3 0 0 0
0 0 0 4 5 6
有沒有方法可以讓他變成以下這樣
B=
1
0
0
2 3
4 5 6
就是每列都往前遞補到第一行,然後都是0的列就補一個0(為了觀察用的)
有爬過文
有一個頗類似b=a(a~=0)這個
但是碰到矩陣就亂掉了,而且他把0全刪掉
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