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function twoSum(nums: number[], target: number): number[] {
    const map = new Map<number, number>();
    
    for (let i = 0; i < nums.length; i++) {
        const complement = target - nums[i];
        
        if (map.has(complement)) {
            return [map.get(complement)!, i];
        }
        
        map.set(nums[i], i);
    }
    
    return [];
}