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two-sum · C#
public int[] TwoSum(int[] nums, int target) {
  var map = new Dictionary<int, int>();
  for (int i = 0; i < nums.Length; i++) {
    if (map.ContainsKey(target - nums[i]))
      return new[] { map[target - nums[i]], i };
    map[nums[i]] = i;
  }
  return Array.Empty<int>();
}
✓ 3 / 3 tests Open editor

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