[請益] 關於排列組合不重覆
我想要寫一個1x16的矩陣
全由正1負1組成
ex:[1,-1,1,........];
目前我用隨機方法產生
但是現在想要指定正1的數目
ex:我先要7個1,9個-1
之後會套用到1x32,1x64
並且不希望重覆
當然如果有重覆的方法也可以
想請問各位前輩高手是否有解
謝謝
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