Fix: week4 ex4

week4/ex4.py

@@ -2,15 +2,26 @@ def main():
     from random import randint
     print('==Exercise 4==')
     LIST_A = [1,2.0,'c',{"id":4}]
-    LIST_B = [randint(1,100) for i in range(10)]
+    LIST_B = [randint(1,20) for i in range(10)]
     LIST_C = [*[chr(i+65) for i in range(10)],27,28.0]
     
     print('Lists Initial Values:')
+
+    """
+    updated on Mar 23th 23:00
+    课上写的有点问题，重写了
     print(f'{i["idtf"]}: {i["value"]}' for i in [
         {"idtf":"List A","value":LIST_A},
         {"idtf":"List B","value":LIST_B},
         {"idtf":"List C","value":LIST_C},
         ])
+    """
+
+    print(*[f'{i["idtf"]}: {i["value"]}' for i in [
+        {"idtf":"List A","value":LIST_A},
+        {"idtf":"List B","value":LIST_B},
+        {"idtf":"List C","value":LIST_C},
+        ]],sep='\n')
     
     print('a range of items: ',LIST_C[:-3])
     print('reverse print of list: ',LIST_C[::-1])
@@ -23,8 +34,18 @@ def main():
     
     LIST_B.sort()
     print('sorting List B:',LIST_B)
-    
+
+    """
+    updated on Mar 23th 22:54
+    课上写的有点问题，重写了
     print('number of similar items in the list B: ',sum([1 if LIST_B[i] in LIST_B[i+1:] else 0 for i in range(len(LIST_B))]))
+    """
+    TEMP_DICT_SIMCOUNTER = {}
+    for i in LIST_B: 
+        if i in TEMP_DICT_SIMCOUNTER: TEMP_DICT_SIMCOUNTER[i]+=1 
+        else: TEMP_DICT_SIMCOUNTER[i]=1
+
+    print('number of similar items in the list B: ',*[f'{i}:{TEMP_DICT_SIMCOUNTER[i]} times ' if TEMP_DICT_SIMCOUNTER[i]>1 else "" for i in TEMP_DICT_SIMCOUNTER.keys()],sep='')
     
     print('==End Of Ex4==')
     return 0