Practice Find Stores with Inventory Imbalance
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Find Stores with Inventory Imbalance
Tables: stores(store_id INT, store_name VARCHAR, location VARCHAR) and inventory(inventory_id INT, store_id INT, product_name VARCHAR, quantity INT, price DECIMAL). Consider stores carrying at least three different products. Compare stock of the highest-price and lowest-price products; include a store when the highest-price product has less stock. Return store_id, store_name, location, most_exp_product, cheapest_product, and imbalance_ratio (cheapest quantity divided by most-expensive quantity), rounded to two decimals. Sort by ratio descending, then store_name ascending. Practice approach: Count distinct products per store, locate its price extremes, compare their quantities, and calculate the ratio with decimal division. The supplied task does not define tied extreme prices or a zero divisor; do not invent a product tie-breaker or silently exclude such inputs. The worked example uses unique prices and positive stocks.
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Understanding the Find Stores with Inventory Imbalance Problem
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Problem Statement
Tables: stores(store_id INT, store_name VARCHAR, location VARCHAR) and inventory(inventory_id INT, store_id INT, product_name VARCHAR, quantity INT, price DECIMAL). Consider stores carrying at least three different products. Compare stock of the highest-price and lowest-price products; include a store when the highest-price product has less stock. Return store_id, store_name, location, most_exp_product, cheapest_product, and imbalance_ratio (cheapest quantity divided by most-expensive quantity), rounded to two decimals. Sort by ratio descending, then store_name ascending. Practice approach: Count distinct products per store, locate its price extremes, compare their quantities, and calculate the ratio with decimal division. The supplied task does not define tied extreme prices or a zero divisor; do not invent a product tie-breaker or silently exclude such inputs. The worked example uses unique prices and positive stocks.
Source: Find Stores with Inventory Imbalance on LeetCode. Use the original task for its coding environment and submissions.
Find Stores with Inventory Imbalance
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Examples
# Example 1
{
"stores": [
{
"store_id": 1,
"store_name": "Aster",
"location": "North"
},
{
"store_id": 2,
"store_name": "Birch",
"location": "South"
}
],
"inventory": [
{
"inventory_id": 1,
"store_id": 1,
"product_name": "Camera",
"quantity": 2,
"price": 100
},
{
"inventory_id": 2,
"store_id": 1,
"product_name": "Cable",
"quantity": 9,
"price": 5
},
{
"inventory_id": 3,
"store_id": 1,
"product_name": "Case",
"quantity": 4,
"price": 20
},
{
"inventory_id": 4,
"store_id": 2,
"product_name": "Phone",
"quantity": 1,
"price": 80
},
{
"inventory_id": 5,
"store_id": 2,
"product_name": "Cover",
"quantity": 8,
"price": 10
}
]
}[
{
"store_id": 1,
"store_name": "Aster",
"location": "North",
"most_exp_product": "Camera",
"cheapest_product": "Cable",
"imbalance_ratio": 4.5
}
]Aster has three products and 9/2=4.50 times as many cables as cameras. Birch has only two products and is excluded.
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