Question

还得求问大神python的问题

python中如何将一个矩阵的每一行按从大到小顺序排列，并且取排序后的矩阵的前10列构成一个字典，新字典的格式为{旧矩阵的行号：{旧矩阵行列对应的值：旧矩阵的列号}}？？？

Answer 1

newarray = {}
for rid, row in enumerate(oldarray):
    newrow = [(cid, data) for cid, data in enumerate(row)]
    newrow.sort(key=lambda x: x[1], reverse=True)[:10]
    newarray[rid] = dict(newrow)

newarray = {}
for  rid, row in enumerate(oldarray):
    newrow = [(cid, data) for cid, data in enumerate(row)]
    newrow.sort(key=lambda x: x[1], reverse=True)[:10]
    newarray[rid] = dict(newrow)