{"id":3070,"date":"2022-04-26T11:10:46","date_gmt":"2022-04-26T03:10:46","guid":{"rendered":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=3070"},"modified":"2022-04-26T12:28:34","modified_gmt":"2022-04-26T04:28:34","slug":"%e7%ae%97%e6%b3%95%e5%9f%ba%e7%a1%80%e7%ac%ac9%e5%a4%a9","status":"publish","type":"post","link":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=3070","title":{"rendered":"\u7b97\u6cd5\u57fa\u7840\u7b2c9\u5929"},"content":{"rendered":"\n

78. \u5b50\u96c6<\/a><\/p>\n\n\n\n


\/**
<\/em> 78. \u5b50\u96c6
<\/em> \u7ed9\u4f60\u4e00\u4e2a\u6574\u6570\u6570\u7ec4 nums \uff0c\u6570\u7ec4\u4e2d\u7684\u5143\u7d20 \u4e92\u4e0d\u76f8\u540c \u3002\u8fd4\u56de\u8be5\u6570\u7ec4\u6240\u6709\u53ef\u80fd\u7684\u5b50\u96c6\uff08\u5e42\u96c6\uff09\u3002
<\/em>
<\/em> \u89e3\u96c6 \u4e0d\u80fd \u5305\u542b\u91cd\u590d\u7684\u5b50\u96c6\u3002\u4f60\u53ef\u4ee5\u6309 \u4efb\u610f\u987a\u5e8f \u8fd4\u56de\u89e3\u96c6\u3002
<\/em>
<\/em>
<\/em>
<\/em> \u793a\u4f8b 1\uff1a
<\/em>
<\/em> \u8f93\u5165\uff1anums = [1,2,3]
<\/em> \u8f93\u51fa\uff1a[[],[1],[2],[1,2],[3],[1,3],[2,3],[1,2,3]]
<\/em> \u793a\u4f8b 2\uff1a
<\/em>
<\/em> \u8f93\u5165\uff1anums = [0]
<\/em> \u8f93\u51fa\uff1a[[],[0]]
<\/em>
<\/em>
<\/em> \u63d0\u793a\uff1a
<\/em>
<\/em> 1 <= nums.length <= 10
<\/em> -10 <= nums[i] <= 10
<\/em> nums \u4e2d\u7684\u6240\u6709\u5143\u7d20 \u4e92\u4e0d\u76f8\u540c
<\/em>
<\/em> * <\/em>@author <\/em><\/strong>zeroheart
<\/em> *
<\/em> *\/
<\/em>public class Question78 {
    private List<List<Integer>> res = new ArrayList<>();
    private List<Integer> path = new ArrayList<>();
    public List<List<Integer>> subsets(int[] nums) {
        if(nums.length==0){
            res.add(path);
            return res;
        }
        backtracting(nums, 0);
        return res;
    }

    private void backtracting(int[] nums, int x) {
        res.add(new ArrayList(path));
        if(x >= nums.length){
            return;
        }
        for(int i = x; i<nums.length; i++){
            path.add(nums[i]);
            backtracting(nums, i+1);
            path.remove(path.size() - 1);
        }
    }
}<\/pre>\n\n\n\n
90. \u5b50\u96c6 II<\/a><\/p>\n\n\n\n

\/**
<\/em> 90. \u5b50\u96c6 II
<\/em> \u7ed9\u4f60\u4e00\u4e2a\u6574\u6570\u6570\u7ec4 nums \uff0c\u5176\u4e2d\u53ef\u80fd\u5305\u542b\u91cd\u590d\u5143\u7d20\uff0c\u8bf7\u4f60\u8fd4\u56de\u8be5\u6570\u7ec4\u6240\u6709\u53ef\u80fd\u7684\u5b50\u96c6\uff08\u5e42\u96c6\uff09\u3002
<\/em>
<\/em> \u89e3\u96c6 \u4e0d\u80fd \u5305\u542b\u91cd\u590d\u7684\u5b50\u96c6\u3002\u8fd4\u56de\u7684\u89e3\u96c6\u4e2d\uff0c\u5b50\u96c6\u53ef\u4ee5\u6309 \u4efb\u610f\u987a\u5e8f \u6392\u5217\u3002
<\/em>
<\/em>
<\/em>
<\/em> \u793a\u4f8b 1\uff1a
<\/em>
<\/em> \u8f93\u5165\uff1anums = [1,2,2]
<\/em> \u8f93\u51fa\uff1a[[],[1],[1,2],[1,2,2],[2],[2,2]]
<\/em> \u793a\u4f8b 2\uff1a
<\/em>
<\/em> \u8f93\u5165\uff1anums = [0]
<\/em> \u8f93\u51fa\uff1a[[],[0]]
<\/em>
<\/em>
<\/em> \u63d0\u793a\uff1a
<\/em>
<\/em> 1 <= nums.length <= 10
<\/em> -10 <= nums[i] <= 10
<\/em>
<\/em> * <\/em>@author <\/em><\/strong>zeroheart
<\/em> *
<\/em> *\/
<\/em>public class Question90 {
    \/\/ https:\/\/leetcode-cn.com\/problems\/subsets-ii\/solution\/90-zi-ji-iiche-di-li-jie-zi-ji-wen-ti-ru-djmf\/
    private List<List<Integer>> res = new ArrayList<>();
    private List<Integer> path = new ArrayList<>();
    private Boolean[] visited;
    public List<List<Integer>> subsetsWithDup(int[] nums) {
        if(nums.length==0){
            res.add(path);
            return res;
        }
        Arrays.sort<\/em>(nums);
        visited = new Boolean[nums.length];
        backtracting(nums, 0);
        return res;
    }

    private void backtracting(int[] nums, int x) {
        res.add(new ArrayList(path));
        if(x >= nums.length){
            return;
        }
        for(int i = x; i<nums.length; i++){
            if(i>=1 && nums[i]==nums[i-1] && visited[i-1]==false){
                \/\/ \u5982\u679c\u5f53\u524d\u5143\u7d20\u548c\u524d\u4e00\u4e2a\u5143\u7d20\u76f8\u540c\uff0c\u800c\u4e14\u524d\u4e00\u4e2a\u5143\u7d20\u6ca1\u6709\u88ab\u8bbf\u95ee\uff0c\u8bf4\u660e\u524d\u4e00\u4e2a\u76f8\u540c\u7684\u5143\u7d20\u5728\u5f53\u524d\u5c42\u5df2\u7ecf\u88ab\u7528\u8fc7\u4e86
                continue;
            }
            path.add(nums[i]);
            visited[i] = true;
            backtracting(nums, i+1);
            visited[i] = false;
            path.remove(path.size() - 1);
        }
    }
}<\/pre>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
78. \u5b50\u96c6 \/** 78. \u5b50\u96c6 \u7ed9\u4f60\u4e00\u4e2a\u6574\u6570\u6570\u7ec4 nums \uff0c\u6570\u7ec4\u4e2d\u7684\u5143\u7d20 \u4e92\u4e0d\u76f8\u540c \u3002\u8fd4\u56de\u8be5\u6570\u7ec4\u6240\u6709\u53ef\u80fd […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[155],"tags":[176],"_links":{"self":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3070"}],"collection":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3070"}],"version-history":[{"count":4,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3070\/revisions"}],"predecessor-version":[{"id":3075,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3070\/revisions\/3075"}],"wp:attachment":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3070"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3070"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3070"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}