如何让所有Python二维数组中小于0的元素等于0答:!/usr/bin/env python# coding=utf-8#python 2.7t = [[1,2,0],[1,-1,3],[2,4,-1]]print map(lambda x:[[i,0][i<0] for i in x],t)
python 数组切割答:具体代码如下:a = [10, 25, 69, 51, 452, 336, 79, 52, 67]b = [0, 0, 0, 2, 2, 3, 3, 3, 3]d = {}for i in b:d[i] = (d[i] + 1) if d.has_key(i) else 1p = 0for i in d.values():print a[p : (p + i)]p += i运行结果:...