var maxProductSubarray = function(nums) {
let maxSubarrProd = 0;
let [currMin, currMax] = [1, 1];
let start = 0;
let end = 0;
let maxStart = 0;
let maxEnd = 0;
for(let i = 0; i < nums.length; i++){
const num = nums[i];
const temp = num * currMax;
if (temp < num && i > 0) {
currMax = num;
currMin = num;
start = i;
end = i;
} else {
currMax = Math.max(temp, currMin * num, num);
currMin = Math.min(temp, currMin * num, num);
if (currMax === num) {
start = i;
}
end = i;
}
if (currMax > maxSubarrProd) {
maxSubarrProd = currMax;
maxStart = start;
maxEnd = end;
}
}
return {
maxProduct: maxSubarrProd,
startIndex: maxStart,
endIndex: maxEnd,
subarray: nums.slice(maxStart, maxEnd + 1)
};
};
// Example usage:
const nums = [2, 3, -2, 4];
const result = maxProductSubarray(nums);
console.log(result);
