多分隔符+双指针 | HJ74 参数解析

@ 最优解
s = input()
flag = 0
p1 = p2 = sum = 0
res = []
while p2 < len(s):
    if s[p2] == ' ':
        if p2 - p1 > 0:
            res.append(s[p1:p2])
        p1 = p2+1
    elif s[p2] == '"':
        flag = True
        p1 = p2 + 1
        while flag:
            p2 += 1
            if s[p2] == '"':
                flag = False
                res.append(s[p1:p2])
                p1 = p2+1
    p2 += 1
if p2 - p1 > 0:
    res.append(s[p1:p2])
print(len(res))
for i in res:
    print(i)

# 我的代码
s = input()
res = []
p1, p2 = 0, 0
flag = False
for i in range(len(s)):
    if not flag:
        if s[p2] == '"':
            p1 = p2+1
            flag = True
        elif s[p2] == ' ' and p2-p1>0:  # p2-p1>0，两指针之间有包住参数再添加
            res.append(s[p1:p2])
            p1 = p2+1
    else:
        if s[p2] == '"':
            res.append(s[p1:p2])
            p1 = p2+1
            flag = False
    p2 += 1
if p2-p1>0:
    res.append(s[p1:p2])
print(len(res))
for i in res:
    print(i.strip())

用时：50min