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twoSum.js — NIETCode Editor
// ✅ Two Sum — Accepted in 52ms
 
function twoSum(nums, target) {
  const map = new Map();
  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);
  }
}
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