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JS力扣刷题78. 子集

yeamy 2022-04-14 阅读 105
var subsets = function(nums) {
    let answer = [];
    let answers = [];
    function backtrack(index, start){
        if(index <= nums.length)answers.push([...answer]);
        for(let i = start; i <= nums.length - 1; i++){
            answer.push(nums[i]);
            backtrack(index + 1, i + 1);
            answer.pop()
        }
    }
    backtrack(0, 0);
    return answers;
};
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