题解 | #参数解析#

设一个参数yin，当yin=0时，说明现在指针i在引号外。当yin=1时，在引号内。

import sys
for line in sys.stdin:
    line = line[:-1]
    yin,i,start = 0,0,0
    list1 = []
    while i < len(line):
        if line[i] == '"' and yin == 0:
            yin = 1
            start = i+1
        elif line[i] == '"' and yin == 1:
            list1.append(line[start:i])
            start = i + 2 #引号后面是空格
            yin = 0
            i = i + 1#要跳开引号后面紧跟的空格
        elif line[i] == ' ' and yin == 0:
            list1.append(line[start:i])
            start = i+1
        elif i == len(line)-1 and line[-1] != '"':
            list1.append(line[start:])
        i = i+1
    print(len(list1))
    for j in list1:
        print(j)