Lang:Python2
Edit1234567891011121314151617n = int(raw_input().strip())for i in range(n):s = raw_input().strip()if '_' in s:j = 0while(j<len(s)):if s[j]=='_':s = s[:j]+s[j+1:j+2].upper()+s[j+2:]j+=1print selse:j = 0while(j<len(s)):if s[j].isupper():s = s[:j]+'_'+s[j].lower()+s[j+1:]j+=1print s