擅长:python、mysql、java
<h2>计数谷挑战</h2>
<p>这就是我如何解决我的计数谷挑战</p>
<pre><code>def countingValleys(n, s):
ls = list(s)
seeLevel = 0
valley = 0
for i in ls:
if i == 'U':
seeLevel += 1
else:
if seeLevel == 0:
valley +=1
seeLevel-= 1
return valley
if __name__ == '__main__':
fptr = open(os.environ['OUTPUT_PATH'], 'w')
n = int(raw_input())
s = raw_input()
</code></pre>