save project

1.py

+s = 'aabbbccccbbd'
+dict2 = {}
+for i in s:
+    if i not in dict2:
+        dict2[i] = s.count(i)
+s1 = ''
+for k,v in dict2.items():
+    s1 += k + str(v)
+print(s1)
\ No newline at end of file

2.py/3.py

+s = 'Welome to Beijing'
+s1 = s.split(' ')
+s1.reverse()
+print(' '.join(s1))
\ No newline at end of file

4.py

+str=input("请输入一个字符串:\n")
+A=""
+B=""
+for i in str[::2]:
+    A=A+i
+print("下标为偶数的字符串：")
+print(A)
+for j in str[1::2]:
+    B=B+j
+print("下标为奇数的字符串：")
+print(B)
+C=A+B
+print("合并后的字符串：")
+print(C)
\ No newline at end of file

5.py

+str1 = "ayjAYJabcdefghf"
+new = {}
+str2 = str1.lower()
+for j in str2:
+    if j in new:
+        new[j] += 1
+    else:
+        new[j] = 1
+print(new)
\ No newline at end of file

6.py

+str=input("请输入一个字符串:\n")
+str1=str[0:-1]
+str3=str[-1]+str1
+print("后移一位的新字符串为：%s"%str3)
\ No newline at end of file

7.py

+list=['1','2','3','4','5','6','7','8','9']
+length=len(list)
+print("字符串中间位置的数字为：%s"%list[int((length-1)/2)])
\ No newline at end of file

8.py

+list=[1,1,1,2,2,3,4,4,4,5,5]
+for i in list:
+    if list.count(i)>1:
+        list.remove(i)
+print("删除重复元素后：%s"%list)
\ No newline at end of file

store.py

-goods = {'可口可乐':3,'旺仔牛奶':4,'农夫山泉':1,'辣条':3,'巴西烤肉':2,'果冻':4,'乐事':5,'奥利奥':10,'巧克力':6}
-goods.pop("农夫山泉")
-print(goods)
-
-
+s = 'HelloMyWorld'
+str = []
+for i in range(len(s)):
+    if 'A' <= s[i] <='Z' and i != 0:
+        str.append(' ')
+    str.append(s[i])
+print(''.join(str))
\ No newline at end of file