测试开发笔试题(python)_测试开发python笔试题_coco_qa的博客-CSDN博客
1、字符串相关
1.1 字符串中最大长度子串
# 字符串中最大长度子串 # 如字符串abcd13agbf,当重复出现某个字符时,算一个子串,比如abcd13a或bcd13agb都是子串 str1 = 'abcd13agbf' str_list = [] for i in range(len(str1)): try: tmp = str1.index(str1[i], i+1) str_list.append(str1[i:tmp+1]) except ValueError: continue print(str_list)
1.2 是否是回文
# 是否是回文 例如 “abccba” 是一个回文 # 方法一:反转reversed()函数,判断是否相等 str1 = "abccba" if list(str1) == list(reversed(list(str1))): print('是回文') else: print('不是回文') #方法二:利用递归 def ishui(s): if len(s) <= 2: print('是回文') elif s[0] == s[-1]: return ishui(s[1:-1]) else: print('不是回文') ishui(str1)
1.3 找出子序列
# 判断字符串str1 是 字符串str2 的子串 str1 = 'ace' str2 = 'abcdef' def isquence(s,t): j = 0 #遍历t for i in range(len(s)): tmp = s[i] #当前需要查找的字符串tmp try: res = t.index(tmp,j) #记录当前tmp在s中的位置 # list.index(x[, start[, end]]) print(res) j = res + 1 # 找到后继续遍历 except ValueError: return False #/没找到返回错误 return True print(isquence(str1,str2)) # 判断字符串是否包含某个子串 def find(s,t): try: return s.index(t) except ValueError: return False s = 'nihao,shijie' t = 'nihao' result = find(s,t) print(result)
1.4 字符串中出现最多的字符
# 方法1 str1 = 'abcaaaaddddd' str2 = list(set(str1)) print(str2, type(str2)) count_list = [] for i in str2: str3 = str1.count(i) print(str3) count_list.append(str3) print(count_list) # [5,1,1,5] print(str2[count_list.index(max(count_list))]) # 方法2 s = "abcaaaaddddd" count = {} for i in s: if i not in count: count[i] = 1 else: count[i] += 1 print(max(count))
标签:count,python,str2,str1,笔试,list,字符串,测试,print From: https://www.cnblogs.com/bluebluehi/p/17627402.html