// your code goes here
function twoSum(nums, target) {
    let hashTable = {};
    for (let i = 0; i < nums.length; i++) {
        let num = nums[i];
        let complement = target - num;
        if (hashTable[complement] !== undefined) {
            return [hashTable[complement], i];
        }
        hashTable[num] = i;
    }
    return [];
}
 
// Example usage
const nums = [2, 7, 11, 15];
const target = 9;
console.log(twoSum(nums, target)); // Output: [0, 1]
 

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