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문제

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public class Test {\n\n    public static void main(String[] args) {\n        System.out.println(Arrays.toString(twoSum(new int[]{2,7,11,15}, 9)));\n        System.out.println(Arrays.toString(twoSum(new int[]{3,2,4}, 6)));\n        System.out.println(Arrays.toString(twoSum(new int[]{3,3}, 6)));\n        System.out.println(Arrays.toString(twoSum(new int[]{-3,4,3,90}, 0)));\n    }\n\n    public static int[] twoSum(int[] nums, int target) {\n        //\n    }\n}
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결과 및 풀이

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public static int[] twoSum(int[] nums, int target){\n    Map<Integer, Integer> bucket=new HashMap<>();\n    \n    for(int i=0;i<nums.length;i++){\n        int num=nums[i];\n    \n    \n        if(bucket.containsKey(num)){\n            return new int[]{bucket.get(num),i};\n        }\n        bucket.put(target-num,i);\n    }\n    \n    return null;\n}
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배웠다

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