Mid Exam Python "Array Modifier"?!
Здравейте, някой има ли обяснение защо на решението на посочената задача Judge дава 0/100, при излезли преди това нулеви тестове и debug в пълен синхрон с указанията? В същото време ми дава 40/100 на незавършено решение(посочено в края).
02. Array Modifier
You are given an array with integers. Write a program to modify the elements after receive the commands “swap”, “multiply” or “decrease”.
- “swap {index1} {index2}” take two elements and swap their places.
- “multiply {index1} {index2}” take element at the 1st index and multiply it with element at 2nd index. Save the product at the 1st index.
- “decrease” decreases all elements in the array with 1.
Input
On the first input line you will be given the initial array values separated by a single space.
On the next lines you will receive commands until you receive the command “end”. The commands are as follow:
- “swap {index1} {index2}”
- “multiply {index1} {index2}”
- “decrease”
Output
The output should be printed on the console and consist element of the modified array – separated by “, “(comma and single space).
Constraints
- Commands will be: “swap”, “multiply”, “decrease” and “end”
- Elements of the array will be integer numbers in the range [-231...231]
- Count of the array elements will be in the range [2...100]
- Indexes will be always in the range of the array
Examples
|
Input |
Output |
Comments |
|
23 -2 321 87 42 90 -123 swap 1 3 swap 3 6 swap 1 0 multiply 1 2 multiply 2 1 decrease end |
86, 7382, 2369942, -124, 41, 89, -3 |
23 -2 321 87 42 90 -123 – initial values swap 1(-2) and 3(87) ▼ 23 87 321 -2 42 90 -123 swap 3(-2) and 6(-123) ▼ 23 87 321 -123 42 90 -2 swap 1(87) and 0(23) ▼ 87 23 321 -123 42 90 -2 multiply 1(23) 2(321) = 7383 ▼ 87 7383 321 -123 42 290 -2 multiply 2(321) 1(7383) = 2369943 ▼ 87 7383 2369943 -123 42 90 -2 decrease – all - 1 ▼ 86 7383 2369942 -124 41 89 -3 |
|
1 2 3 4 swap 0 1 swap 1 2 swap 2 3 multiply 1 2 decrease end |
1, 11, 3, 0 |
|
Решение 0/100
array = input().split()
command = input().split()
amount = 0
new_array = []
while not command == "end":
if command[0] == "swap":
array[int(command[1])], array[int(command[2])] = array[int(command[2])], array[int(command[1])]
elif command[0] == "multiply":
amount = int(array[int(command[1])]) * int(array[int(command[2])])
array.remove(array[int(command[1])])
array.insert(int(command[1]), str(amount))
elif command[0] == "decrease":
for item in array:
new_array.append(int(item) - 1)
command = input().split()
if command[0] == "end":
break
print(", ".join(map(str, new_array)))
Решение 40/100
array = input().split()
command = input().split()
amount = 0
while not command == "end":
if command[0] == "swap":
array[int(command[1])], array[int(command[2])] = array[int(command[2])], array[int(command[1])]
if command[0] == "multiply":
amount = int(array[int(command[1])]) * int(array[int(command[2])])
array.insert(int(command[1]), str(amount))
array.remove(array[int(command[2])])
if command[0] == "decrease":
decreased_array = [int(x)-1 for x in array]
if command[0] == "end":
break
command = input().split()
print(", ".join(map(str, array)))
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