Python 列表的相邻正负数合并有啥好方法嘛？ - V2EX

Home Sign Up Sign In

推荐学习书目

› Learn Python the Hard Way

Python Sites

› PyPI - Python Package Index

› http://diveintopython.org/toc/index.html

› Pocoo

值得关注的项目

› PyPy

› Celery

› Jinja2

› Read the Docs

› gevent

› pyenv

› Stackless Python

› Beautiful Soup

› 结巴中文分词

› Green Unicorn

› Sentry

› Shovel

› pytest

Python 编程

› pep8 Checker

Styles

› PEP 8

› Google Python Style Guide

› Code Style from The Hitchhiker's Guide

This topic created in 2041 days ago, the information mentioned may be changed or developed.

请问 Python 列表的相邻正负数合并有啥好方法嘛？

比如 meta = [0.24, -0.6, -0.68, 0.73, 0.34] 这个列表需要改为 meta = [0.24, -1.28, 1.07]

3 replies • 2021-03-02 17:02:49 +08:00

1

013231

Mar 2, 2021

7

from itertools import groupby

meta = [sum(g) for _, g in groupby(meta, key=lambda v: v > 0)]

2

renmu123

Mar 2, 2021

双指针吧，O(N)复杂度

3

rrfeng

Mar 2, 2021

遍历一遍不就完事儿了？

About · Help · Advertise · Blog · API · FAQ · Privacy · Solana · 1663 Online Highest 6679 ·

Select Language

创意工作者们的社区

World is powered by solitude

VERSION: 3.9.8.5 · 27ms · UTC 16:13 · PVG 00:13 · LAX 09:13 · JFK 12:13
♥ Do have faith in what you're doing.