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Maximum Product Subarray

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Given an integer array nums, find a subarray that has the largest product, and return the product.

class Solution {
    public int maxProduct(int[] nums) {
        
        int max = nums[0], min = nums[0], ans = nums[0];
        
        for (int i = 1; i < nums.length; i++) {
            
            int temp = max;  // store the max because before updating min your max will already be updated
            
            max = Math.max(Math.max(max * nums[i], min * nums[i]), nums[i]);
            min = Math.min(Math.min(temp * nums[i], min * nums[i]), nums[i]);
            
            if (max > ans) {
                ans = max;
            }
        }
        
        return ans;

    }
}

Posted by Jamie Meyer 3 months ago

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