如何用Python实现杨辉三角和心
1. 如何实现杨辉三角
import copy list=[] newlist=[] def Fibonacci(list,n): newlist.append(0) if n ==1: return [1] for i in range(n): if i==0 or i==n-1: newlist[i]=1 else: newlist[i]=list[i-1]+list[i] return newlist blanknum=68 for i in range(17): blanknum = blanknum - 4 list=copy.deepcopy(Fibonacci(list,i+1)) for i in range(blanknum/2): print " ", for i in list: print str(i).ljust(6), print ""
实现的效果如下:
看上去还是有点没对齐。。。
2. 如何实现心
def printlove(start,length,midnumber=0,flag=31): for i in range(31): if i<start or i>start+length-1 and i<15-(midnumber-1)/2 or i>15+(midnumber-1)/2 and i<31-start-length or i> 30-start or i==flag: print " ", else: print "*", print "" for i in range(16): if i ==0: printlove(4,3) elif i==1: printlove(1,9) elif i>=2 and i<=5: printlove(0,i+10) elif i==6: printlove(1,7,7,15) elif i>=7 and i<=8: printlove(i-5,6,5-(i-7)*2) elif i==9: printlove(5,6,1) elif i==10: printlove(8,6,1) elif i==15: printlove(15,1,1) else: printlove(i-1,16-i,1)
实现的效果如下:
这样方式有点类似于穷举法,其实这个图案的原始实现算法是根据正弦函数来实现的~具体可参考网上其它语言的实现。