Maximal Sublist Product - Amazon Top Interview Questions
Problem Statement :
Given a list of integers nums, find the maximum product of integers in any contiguous sublist. Constraints 1 ≤ n ≤ 100,000 where n is the length of nums Example 1 Input nums = [1, 10, 2, 0, 3, 5] Output 20 Explanation Maximum product sublist is [1, 10, 2] and 1 * 10 * 2 = 20
Solution :
Solution in C++ :
int solve(vector<int>& nums) {
int product = 1, neg = 0, cur = 0, maxp = INT_MIN;
for (int i : nums) {
product *= i;
cur = product;
if (product < 0) {
if (neg)
cur /= neg;
else
neg = cur;
} else if (product == 0) {
product = 1;
neg = 0;
}
maxp = max(maxp, cur);
}
return maxp;
}
Solution in Python :
class Solution:
def solve(self, nums):
ans = float("-inf")
lo = hi = 1
for x in nums:
lo, hi = min(lo * x, hi * x, x), max(lo * x, hi * x, x)
ans = max(ans, hi)
return ans
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