#0132

Product Except Self

MediumDSA25 min20 XP

Problem

Given nums, return an array where result[i] is the product of every nums[j] except nums[i]. Do not use division.

Why This Matters

Prefix and suffix passes are a powerful alternative when division is banned or zero values exist.

Function Signature

def product_except_self(nums):

Examples

Example 1

Input[1, 2, 3, 4]

Output[24, 12, 8, 6]

For index 1, multiply 1 * 3 * 4 = 12.

Constraints

Return the exact requested structure.
Handle normal edge cases cleanly.
Prefer readable code over clever shortcuts.

CodePython

def product_except_self(nums):
    """
    Input example: [1, 2, 3, 4]
    Return: [24, 12, 8, 6]
    Return the value from the function so the tests can compare it. Do not print unless the prompt asks.
    """
    # write your code here
    return []

def product_except_self(nums):
    """
    Input example: [1, 2, 3, 4]
    Return: [24, 12, 8, 6]
    Return the value from the function so the tests can compare it. Do not print unless the prompt asks.
    """
    # write your code here
    return []

Visible browser tests run here when available.

Testcases1 visible / 3 hidden categories

Core example

Input[1, 2, 3, 4]

Expected[24, 12, 8, 6]

For index 1, multiply 1 * 3 * 4 = 12.

Hidden Test Categories

one zerotwo zerosnegative values