lqx0317

public int[] twoSum2(int[] nums, int target){ HashMap m = new HashMap(); int[] res = new int[2]; for (int i =0;i< nums.length;++i){ m.put(nums[i],i); if (m.containsKey(target-nums[i])){ res[0]=m.get(target-nums[i]); res[1]=i; return res; } }return...