Having some trouble with this script. It iterates through a two dimensional array and adds each corresponding index together. So basically arr[0][1] + arr[0][2] + arr[0][3] ... arr[1][1] + arr[1][2] + arr[1][3] ...etc.Having some trouble with this script. It iterat
阅读背景：
在二维数组中动态创建索引
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