letcode_1773.py

# You are given an array items, where each 
# items[i] = [typei, colori, namei] describes the type, color, and name of the ith item.
#  You are also given a rule represented by two strings, ruleKey and ruleValue.

# The ith item is said to match the rule if one of the following is true:

# ruleKey == "type" and ruleValue == typei.
# ruleKey == "color" and ruleValue == colori.
# ruleKey == "name" and ruleValue == namei.
# Return the number of items that match the given rule.

 

# Example 1:

# Input: items = [["phone","blue","pixel"],["computer","silver","lenovo"],["phone","gold","iphone"]], 
# ruleKey = "color", ruleValue = "silver"
# Output: 1
# Explanation: There is only one item matching the given rule, which is ["computer","silver","lenovo"].

# Example 2:

# Input: items = [["phone","blue","pixel"],["computer","silver","phone"],["phone","gold","iphone"]], 
# ruleKey = "type", ruleValue = "phone"
# Output: 2
# Explanation: There are only two items matching the given rule, which are ["phone","blue","pixel"] and
#  ["phone","gold","iphone"]. Note that the item ["computer","silver","phone"] does not match.

# items[i] = [typei, colori, namei]
items = [["phone","blue","pixel"],["computer","silver","phone"],["phone","gold","iphone"]]
ruleKey = "type"
ruleValue = "phone"
dict = {'type': 0, 'color': 0, 'name': 0}

for i in items:
    if ruleKey == 'color':
        if i[1] == ruleValue:
            dict['color'] +=1
    elif ruleKey == 'type':
        if i[0] == ruleValue:
            dict["type"] +=1
    elif ruleKey == 'name':
        if i[2] == ruleValue:
            dict["name"] +=1

print(dict[ruleKey])

# Solucion 2

# if ruleKey == 'color':
#     print(len(list(filter(lambda x:x[1]==ruleValue,items))))
# elif ruleKey == 'type':
#     print(len(list(filter(lambda x:x[0]==ruleValue,items))))
# elif ruleKey == 'name':
#     print(len(list(filter(lambda x:x[2]==ruleValue,items))))

# solucion 3

# cnt = 0
# for i in range(len(items)):
#     if ruleKey == "type" and ruleValue == items[i][0]:
#         cnt += 1
#     if ruleKey == "color" and ruleValue == items[i][1]: 
#         cnt += 1
#     if ruleKey == "name" and ruleValue == items[i][2]:
#         cnt += 1
# print(cnt)