Below is the Python code for the array
python
def process_queries(queries):
numbers = []
result = []
def count_pairs_with_diff(numbers, diff):
count = 0
num_set = set(numbers)
for num in num_set:
if num + diff in num_set:
count += numbers.count(num) * numbers.count(num + diff)
return count
for query in queries:
operation, value = query[0], query[1]
if operation == "+":
numbers.append(value)
elif operation == "-":
numbers.remove(value)
diff_count = count_pairs_with_diff(numbers, value)
result.append(diff_count)
return result
# Example Usage:
queries = [("+1",), ("+3",), ("-1",), ("+4",), ("-3",)]
output = process_queries(queries)
print(output)
The above code is one that helps to defines a function process_queries that takes a list of queries as input and returns an array of counts for each query.
So, based on the above, It make use of a helper function count_pairs_with_diff to calculate the number of pairs with a given difference. The example usage shows how to use this function with a set of queries.
See text below
Text: Given an empty array that should contain integers numbers, your task is to process a list of queries on it. Specifically, there are two types of queries: 1. "+x" - add integer x to numbers. Numbers may contain multiple instances of the same integer. 2. "-x" - remove a single instance of integer x from numbers. After processing each query, record the number of pairs in numbers with a difference equal to a given diff. The final output should be an array of such values for all queries. Notes: - All numbers in queries are guaranteed to be in the range of -10 to 10 inclusive. - It is also guaranteed that for every "-x" query, the specified number x exists in numbers. - It is guaranteed that the answer for each query fits into a signed 32-bit integer type.
Text: Given an empty array that should contain integers numbers, your task is to process a list of queries on it. Specifically, there are two types of queries:
1. "+x" - add integer x to numbers. Numbers may contain multiple instances of the same integer.
2. "-x" - remove a single instance of integer x from numbers.
After processing each query, record the number of pairs in numbers with a difference equal to a given diff. The final output should be an array of such values for all queries.
Notes:
- All numbers in queries are guaranteed to be in the range of -10 to 10 inclusive.
- It is also guaranteed that for every "-x" query, the specified number x exists in numbers.
- It is guaranteed that the answer for each query fits into a signed 32-bit integer type.