John是一名打字员，他有一个习惯就是切换大小写时从来不按SHIFT键，而是只用Caps Lock键。老板为了监督John的工作，想统计John每天敲了多少次键盘，让我们编写一个函数来实现这个想法吧。
备注：输入的是字符串，只包含大小写英文字母。键盘初始默认是小写状态。
示例：
输入：aa，返回2，因为敲了a, a。
输入：Aa，返回4，因为敲了Cpas Lock, A, Cpas Lock, a。题目难度：简单
题目来源：codewars
def typist(words: str) -> int:
pass
assert typist("aA") == 3
assert typist("Aa") == 4
assert typist("AAAaaaBBBbbbABAB") == 21
import string
def typist(words):
tag=0
num=len(words)
if words[0] in string.ascii_uppercase:
num=num+1
tag=0
else:
tag=1
for i in range(1,len(words)):
if words[i] in string.ascii_lowercase and tag==0:
tag=1
num=num+1
if words[i] in string.ascii_uppercase and tag==1:
tag=0
num=num+1
print(num)
return num
public Integer typist(String words) {
int res = 1;
char[] chars = words.toCharArray();
if (Character.isUpperCase(chars[0])) {
res = 2;
}
for (int i = 1; i < chars.length; i++) {
if ((Character.isUpperCase(chars[i - 1]) && Character.isUpperCase(chars[i])) || (Character.isLowerCase(chars[i - 1]) && Character.isLowerCase(chars[i]))) {
res++;
} else {
res += 2;
}
}
return res;
}
@Test
public void testTypist() {
assert typist("aA").equals(3);
assert typist("Aa").equals(4);
assert typist("AAAaaaBBBbbbABAB").equals(21);
}
public static int typist(String str){
int count=0;
char[] chars = str.toCharArray();
for(int i=0;i<chars.length;i++){
if(
(i==0&&Character.isUpperCase(chars[i]))||
(i>0&&Character.isUpperCase(chars[i])&&(!Character.isUpperCase(chars[i-1])))||
(i>0&&(!Character.isUpperCase(chars[i]))&&Character.isUpperCase(chars[i-1]))
){
count++;
}
}
return str.length()+count;
}
def typist(words: str) -> int:
count = len(words)
if words[0].isupper() == True:
count += 1
for i in range(len(words)-1):
if words[i].isupper() != words[i+1].isupper():
count += 1
return count
def typist(words: str) -> int:
# 键盘初始默认是小写状态，Cpas Lock灯关闭
Cpas_Lock = False
# 计数器初始化为0
count = 0
# 遍历每个字母
for s in words:
# 获取单个字母的 ASCII码
strCode = ord(s)
# 判断字母是大写还是小写
# 大写字母ASCII码范围：65~90
# 小写字母ASCII码范围：97~122
strStatu = "大写字母" if strCode < 97 else "小写字母"
if Cpas_Lock == False and strStatu == "大写字母":
# 如果 Cpas Lock灯熄灭的，且敲出的是大写字母
# 那么必需按 Cpas Lock建，将键盘大写打开才能敲出来
Cpas_Lock = True
# 计数器 +1
count += 1
elif Cpas_Lock == True and strStatu == "小写字母" :
# 如果 Cpas Lock灯亮着，且敲出的是小写字母
# 那么必需按 Cpas Lock建，将键盘大写关闭才能敲出来
Cpas_Lock = False
# 计数器 +1
count += 1
# 敲出字母本身，计数器 +1
count += 1
# 返回计数器的值
return count
assert typist("aA") == 3
assert typist("Aa") == 4
assert typist("AAAaaaBBBbbbABAB") == 21
def typist(words: str) -> int:
result = 0
caps_lock = False
for word in words:
if (word.isupper() and not caps_lock) or (not word.isupper() and caps_lock):
result += 1
caps_lock = not caps_lock
result += 1
return result
assert typist("aA") == 3
assert typist("Aa") == 4
assert typist("AAAaaaBBBbbbABAB") == 21
def typist(words: str) -> int:
words = list(words)
count=[]
for i in range(1,len(words)):
if (words[i].isupper() and words[i - 1].isupper()) or (words[i].islower() and words[i - 1].islower()):
count.append(1)
else:
count.append(2)
return sum(count)+1 if words[0].islower() else sum(count)+2
assert typist("aA") == 3
assert typist("Aa") == 4
assert typist("AAAaaaBBBbbbABAB") == 21
def typist(words: str) -> int:
sum = 0
for i in range(len(words)):
# 如果第i位是小写字母
# 如果第i-1位是小写字母或者第i位是第一位，键盘次数+1
# 否则第i-1位是大写字母，键盘次数+2
if words[i].islower():
if words[i - 1].islower() or i == 0:
sum += 1
else:
sum += 2
# 如果第i位是大写字母
# 如果第i-1位是小写字母或者第i位是第一位，键盘次数+2
# 否则第i-1位是大写字母，键盘次数+1
else:
if words[i - 1].islower() or i == 0:
sum += 2
else:
sum += 1
return sum
def typist(words: str) -> int:
l = [str(int(w == w.upper())) for w in words]
upper_areas = len([i for i in str("".join(l)).split('0') if i!=""])
return upper_areas*2 + len(words) - (1 if l[len(l)-1]=='1' else 0)
def typist(words: str) -> int:
res_str=""
for i in words:
if i.isupper():
res_str+="1"
else:
res_str+="0"
return len(words)+("0"+res_str).count("01")+("0"+res_str).count("10")
assert typist("aA") == 3
assert typist("Aa") == 4
assert typist("AAAaaaBBBbbbABAB") == 21