{"id":2725,"date":"2022-04-13T22:15:35","date_gmt":"2022-04-13T14:15:35","guid":{"rendered":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=2725"},"modified":"2022-04-13T23:27:12","modified_gmt":"2022-04-13T15:27:12","slug":"%e7%ae%97%e6%b3%95%e5%9f%ba%e7%a1%80%e7%ac%ac%e5%9b%9b%e5%a4%a9","status":"publish","type":"post","link":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=2725","title":{"rendered":"\u7b97\u6cd5\u57fa\u7840\u7b2c\u56db\u5929"},"content":{"rendered":"\n

844. \u6bd4\u8f83\u542b\u9000\u683c\u7684\u5b57\u7b26\u4e32<\/a><\/p>\n\n\n\n

\u9000\u683c\uff0c\u53ef\u4ee5\u4f7f\u7528stack\u7684\u7279\u6027\u6765\u5904\u7406\u3002\u4e5f\u53ef\u4ee5\u4f7f\u7528\u53cc\u6307\u9488\u6765\u5904\u7406\u3002\u3002\u8bd5\u4e86\u4e0b\u6808\u7684\u6548\u7387\u8fd8\u662f\u660e\u663e\u4f4e\u4e8e\u53cc\u6307\u9488\u7684\u3002<\/p>\n\n\n\n


\/**
<\/em> 844. \u6bd4\u8f83\u542b\u9000\u683c\u7684\u5b57\u7b26\u4e32
<\/em> \u7ed9\u5b9a s \u548c t \u4e24\u4e2a\u5b57\u7b26\u4e32\uff0c\u5f53\u5b83\u4eec\u5206\u522b\u88ab\u8f93\u5165\u5230\u7a7a\u767d\u7684\u6587\u672c\u7f16\u8f91\u5668\u540e\uff0c\u5982\u679c\u4e24\u8005\u76f8\u7b49\uff0c\u8fd4\u56de true \u3002# \u4ee3\u8868\u9000\u683c\u5b57\u7b26\u3002
<\/em>
<\/em> \u6ce8\u610f\uff1a\u5982\u679c\u5bf9\u7a7a\u6587\u672c\u8f93\u5165\u9000\u683c\u5b57\u7b26\uff0c\u6587\u672c\u7ee7\u7eed\u4e3a\u7a7a\u3002
<\/em>
<\/em>
<\/em>
<\/em> \u793a\u4f8b 1\uff1a
<\/em>
<\/em> \u8f93\u5165\uff1as = \"ab#c\", t = \"ad#c\"
<\/em> \u8f93\u51fa\uff1atrue
<\/em> \u89e3\u91ca\uff1as \u548c t \u90fd\u4f1a\u53d8\u6210 \"ac\"\u3002
<\/em> \u793a\u4f8b 2\uff1a
<\/em>
<\/em> \u8f93\u5165\uff1as = \"ab##\", t = \"c#d#\"
<\/em> \u8f93\u51fa\uff1atrue
<\/em> \u89e3\u91ca\uff1as \u548c t \u90fd\u4f1a\u53d8\u6210 \"\"\u3002
<\/em> \u793a\u4f8b 3\uff1a
<\/em>
<\/em> \u8f93\u5165\uff1as = \"a#c\", t = \"b\"
<\/em> \u8f93\u51fa\uff1afalse
<\/em> \u89e3\u91ca\uff1as \u4f1a\u53d8\u6210 \"c\"\uff0c\u4f46 t \u4ecd\u7136\u662f \"b\"\u3002
<\/em>
<\/em>
<\/em> \u63d0\u793a\uff1a
<\/em>
<\/em> 1 <= s.length, t.length <= 200
<\/em> s \u548c t \u53ea\u542b\u6709\u5c0f\u5199\u5b57\u6bcd\u4ee5\u53ca\u5b57\u7b26 '#'
<\/em>
<\/em>
<\/em> \u8fdb\u9636\uff1a
<\/em>
<\/em> \u4f60\u53ef\u4ee5\u7528 O(n) \u7684\u65f6\u95f4\u590d\u6742\u5ea6\u548c O(1) \u7684\u7a7a\u95f4\u590d\u6742\u5ea6\u89e3\u51b3\u8be5\u95ee\u9898\u5417\uff1f
<\/em>
<\/em> * <\/em>@author <\/em><\/strong>zeroheart
<\/em> *
<\/em> *\/
<\/em>public class Question844 {
    public boolean backspaceCompare(String s, String t) {
        \/\/ equals()\u5224\u65ad\u8fd4\u56de\u7684\u4e24\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u76f8\u7b49
        return changeString<\/em>(s).equals(changeString<\/em>(t));
    }

    public static String changeString (String str) {
        \/\/https:\/\/leetcode-cn.com\/problems\/backspace-string-compare\/solution\/shuang-zhi-zhen-fa-si-lu-jian-dan-rong-y-bmn6\/
        \/\/ \u5148\u5c06\u5b57\u7b26\u4e32\u8f6c\u4e3a\u6570\u7ec4\uff0c\u65b9\u4fbf\u4f7f\u7528\u53cc\u6307\u9488\u6cd5
        char[] x = str.toCharArray();
        int slow = 0;
        for (int fast = 0; fast < x.length; fast++) {
            \/\/ \u5f53x[fast] != '#'\u65f6\uff0cx[fast]\u8986\u76d6x[slow]\uff0c\u7136\u540eslow++
            if (x[fast] != '#'){
                x[slow++] = x[fast];
            } else if(x[fast] == '#' && slow != 0){
                \/\/ \u5f53x[fast] = '#'\u4e14slow!=0\u65f6\uff0cslow--
                slow--;
            }
        }

        \/\/ \u8fd4\u56de\u5b57\u7b26\u4e32
        return String.valueOf<\/em>(x, 0, slow);

    }


    public boolean backspaceCompare1(String s, String t) {
        \/\/https:\/\/leetcode-cn.com\/problems\/backspace-string-compare\/solution\/javazhan-jie-fa-by-ilovediana-tl5q\/
        Stack<Character> st1 = new Stack<>();
        Stack<Character> st2 = new Stack<>();
        for (Character c : s.toCharArray()) {
            if (c != '#') {
                st1.push(c);
            }
            else if (!st1.isEmpty()) {
                st1.pop();
            }
        }
        for (Character c : t.toCharArray()) {
            if (c != '#') {
                st2.push(c);
            }
            else if (!st2.isEmpty()) {
                st2.pop();
            }
        }
        while (!st1.isEmpty() && !st2.isEmpty()) {
            if (st1.pop() != st2.pop()) {
                return false;
            }
        }
        return st1.isEmpty() && st2.isEmpty();
    }


    public static void main(String[] args) {
    }
}<\/pre>\n\n\n\n
986. \u533a\u95f4\u5217\u8868\u7684\u4ea4\u96c6<\/a><\/p>\n\n\n\n
\u8fd9\u4e2a\u9898\u76ee\u4e3b\u8981\u662f\u5f52\u5e76\u533a\u95f4\uff0c\u770b\u9898\u89e3\u5427\u3002\u3002<\/p>\n\n\n\n
\n\/**\n<\/em> 986. \u533a\u95f4\u5217\u8868\u7684\u4ea4\u96c6\n<\/em> \u7ed9\u5b9a\u4e24\u4e2a\u7531\u4e00\u4e9b \u95ed\u533a\u95f4 \u7ec4\u6210\u7684\u5217\u8868\uff0cfirstList \u548c secondList \uff0c\u5176\u4e2d firstList[i] = [starti, endi] \u800c secondList[j] = [startj, endj] \u3002\u6bcf\u4e2a\u533a\u95f4\u5217\u8868\u90fd\u662f\u6210\u5bf9 \u4e0d\u76f8\u4ea4 \u7684\uff0c\u5e76\u4e14 \u5df2\u7ecf\u6392\u5e8f \u3002\n<\/em>\n<\/em> \u8fd4\u56de\u8fd9 \u4e24\u4e2a\u533a\u95f4\u5217\u8868\u7684\u4ea4\u96c6 \u3002\n<\/em>\n<\/em> \u5f62\u5f0f\u4e0a\uff0c\u95ed\u533a\u95f4 [a, b]\uff08\u5176\u4e2d a <= b\uff09\u8868\u793a\u5b9e\u6570 x \u7684\u96c6\u5408\uff0c\u800c a <= x <= b \u3002\n<\/em>\n<\/em> \u4e24\u4e2a\u95ed\u533a\u95f4\u7684 \u4ea4\u96c6 \u662f\u4e00\u7ec4\u5b9e\u6570\uff0c\u8981\u4e48\u4e3a\u7a7a\u96c6\uff0c\u8981\u4e48\u4e3a\u95ed\u533a\u95f4\u3002\u4f8b\u5982\uff0c[1, 3] \u548c [2, 4] \u7684\u4ea4\u96c6\u4e3a [2, 3] \u3002\n<\/em>\n<\/em>\n<\/em>\n<\/em> \u793a\u4f8b 1\uff1a\n<\/em>\n<\/em>\n<\/em> \u8f93\u5165\uff1afirstList = [[0,2],[5,10],[13,23],[24,25]], secondList = [[1,5],[8,12],[15,24],[25,26]]\n<\/em> \u8f93\u51fa\uff1a[[1,2],[5,5],[8,10],[15,23],[24,24],[25,25]]\n<\/em> \u793a\u4f8b 2\uff1a\n<\/em>\n<\/em> \u8f93\u5165\uff1afirstList = [[1,3],[5,9]], secondList = []\n<\/em> \u8f93\u51fa\uff1a[]\n<\/em> \u793a\u4f8b 3\uff1a\n<\/em>\n<\/em> \u8f93\u5165\uff1afirstList = [], secondList = [[4,8],[10,12]]\n<\/em> \u8f93\u51fa\uff1a[]\n<\/em> \u793a\u4f8b 4\uff1a\n<\/em>\n<\/em> \u8f93\u5165\uff1afirstList = [[1,7]], secondList = [[3,10]]\n<\/em> \u8f93\u51fa\uff1a[[3,7]]\n<\/em>\n<\/em>\n<\/em> \u63d0\u793a\uff1a\n<\/em>\n<\/em> 0 <= firstList.length, secondList.length <= 1000\n<\/em> firstList.length + secondList.length >= 1\n<\/em> 0 <= starti < endi <= 109\n<\/em> endi < starti+1\n<\/em> 0 <= startj < endj <= 109\n<\/em> endj < startj+1\n<\/em>\n<\/em> * <\/em>@author <\/em><\/strong>zeroheart\n<\/em> *\n<\/em> *\/\n<\/em>public class Question986 {\n    public int[][] intervalIntersection(int[][] firstList, int[][] secondList) {\n        \/\/https:\/\/leetcode-cn.com\/problems\/interval-list-intersections\/solution\/jiu-pa-ni-bu-dong-shuang-zhi-zhen-by-hyj8\/\n        \/**\n<\/em>         * \u600e\u4e48\u6c42\u4ea4\u96c6\u533a\u95f4\n<\/em>         * \u6ce8\u610f\u7eff\u8272\u7bad\u5934\uff0c\u4ea4\u96c6\u533a\u95f4\u7684 start \u53d6\u7684\u662f A\u3001B \u5b50\u533a\u95f4\u4e2d\u8f83\u5927\u7684\u5de6\u754c\u3002\n<\/em>         * \u6ce8\u610f\u7ea2\u8272\u7bad\u5934\uff0c\u4ea4\u96c6\u533a\u95f4\u7684 end \u53d6\u7684\u662f A\u3001B \u5b50\u533a\u95f4\u4e2d\u8f83\u5c0f\u7684\u53f3\u754c\u3002\n<\/em>         * \u53ea\u8981\u6ee1\u8db3 start <= end\uff0c\u5c31\u5f62\u6210\u4e86\u4e00\u4e2a\u4ea4\u96c6\u533a\u95f4\u3002\n<\/em>         *\n<\/em>         * \u53cc\u6307\u9488\u79fb\u52a8\u7684\u65f6\u673a\n<\/em>         * \u6c42\u5b8c\u4e00\u4e2a\u4ea4\u96c6\u533a\u95f4\u540e\uff0c\u8f83\u65e9\u7ed3\u675f\u7684\u5b50\u533a\u95f4\uff0c\u4e0d\u53ef\u80fd\u518d\u548c\u522b\u7684\u5b50\u533a\u95f4\u91cd\u53e0\uff0c\u5b83\u7684\u6307\u9488\u8981\u79fb\u52a8\u3002\n<\/em>         * \u8f83\u957f\u7684\u5b50\u533a\u95f4\u8fd8\u6709\u53ef\u80fd\u548c\u522b\u4eba\u91cd\u53e0\uff0c\u5b83\u7684\u6307\u9488\u6682\u65f6\u4e0d\u52a8\u3002\n<\/em>         *<\/em>\n<\/em>         *\/\n<\/em>        <\/em>int i = 0;\n        int j = 0;\n        List<int[]> res = new ArrayList();\n        while (i < firstList.length && j < secondList.length){\n            int low = Math.max<\/em>(firstList[i][0], secondList[j][0]);\n            int high = Math.min<\/em>(firstList[i][1], secondList[j][1]);\n\n            if(low <= high){\n                res.add(new int[]{low, high});\n            }\n\n            if(firstList[i][1] < secondList[j][1]){\n                i++;\/\/ \u8c01\u5148\u7ed3\u675f\uff0c\u8c01\u7684\u6307\u9488\u5c31\u6b65\u8fdb\uff0c\u8003\u5bdf\u4e0b\u4e00\u4e2a\u5b50\u533a\u95f4\n            }else {\n                j++;\n            }\n        }\n\n        return res.toArray(new int[res.size()][]);\n\n    }\n\n    public static void main(String[] args) {\n    }\n}<\/pre>\n\n\n\n
11. \u76db\u6700\u591a\u6c34\u7684\u5bb9\u5668<\/a><\/p>\n\n\n\n

\/**
<\/em> 11. \u76db\u6700\u591a\u6c34\u7684\u5bb9\u5668
<\/em> \u7ed9\u5b9a\u4e00\u4e2a\u957f\u5ea6\u4e3a n \u7684\u6574\u6570\u6570\u7ec4 height \u3002\u6709 n \u6761\u5782\u7ebf\uff0c\u7b2c i \u6761\u7ebf\u7684\u4e24\u4e2a\u7aef\u70b9\u662f (i, 0) \u548c (i, height[i]) \u3002
<\/em>
<\/em> \u627e\u51fa\u5176\u4e2d\u7684\u4e24\u6761\u7ebf\uff0c\u4f7f\u5f97\u5b83\u4eec\u4e0e x \u8f74\u5171\u540c\u6784\u6210\u7684\u5bb9\u5668\u53ef\u4ee5\u5bb9\u7eb3\u6700\u591a\u7684\u6c34\u3002
<\/em>
<\/em> \u8fd4\u56de\u5bb9\u5668\u53ef\u4ee5\u50a8\u5b58\u7684\u6700\u5927\u6c34\u91cf\u3002
<\/em>
<\/em> \u8bf4\u660e\uff1a\u4f60\u4e0d\u80fd\u503e\u659c\u5bb9\u5668\u3002
<\/em>
<\/em>
<\/em>
<\/em> \u793a\u4f8b 1\uff1a
<\/em>
<\/em>
<\/em>
<\/em> \u8f93\u5165\uff1a[1,8,6,2,5,4,8,3,7]
<\/em> \u8f93\u51fa\uff1a49
<\/em> \u89e3\u91ca\uff1a\u56fe\u4e2d\u5782\u76f4\u7ebf\u4ee3\u8868\u8f93\u5165\u6570\u7ec4 [1,8,6,2,5,4,8,3,7]\u3002\u5728\u6b64\u60c5\u51b5\u4e0b\uff0c\u5bb9\u5668\u80fd\u591f\u5bb9\u7eb3\u6c34\uff08\u8868\u793a\u4e3a\u84dd\u8272\u90e8\u5206\uff09\u7684\u6700\u5927\u503c\u4e3a 49\u3002
<\/em> \u793a\u4f8b 2\uff1a
<\/em>
<\/em> \u8f93\u5165\uff1aheight = [1,1]
<\/em> \u8f93\u51fa\uff1a1
<\/em>
<\/em>
<\/em> \u63d0\u793a\uff1a
<\/em>
<\/em> n == height.length
<\/em> 2 <= n <= 10^5
<\/em> 0 <= height[i] <= 10^4
<\/em>
<\/em> * <\/em>@author <\/em><\/strong>zeroheart
<\/em> *
<\/em> *\/
<\/em>public class Question11 {
    public int maxArea(int[] height) {
        int len = height.length;
        int low = 0;
        int high = len - 1;
        int max = 0;
        while (low < high){
            max = Math.max<\/em>(max, (high - low) * Math.min<\/em>(height[low], height[high]));
            if(height[low] > height[high]){
                \/\/ \u4fdd\u7559\u5927\u7684\u4e00\u8fb9
                high --;
            }else {
                low ++;
            }
        }
        return max;
    }
    public static void main(String[] args) {
    }
}<\/pre>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
844. \u6bd4\u8f83\u542b\u9000\u683c\u7684\u5b57\u7b26\u4e32 \u9000\u683c\uff0c\u53ef\u4ee5\u4f7f\u7528stack\u7684\u7279\u6027\u6765\u5904\u7406\u3002\u4e5f\u53ef\u4ee5\u4f7f\u7528\u53cc\u6307\u9488\u6765\u5904\u7406\u3002\u3002\u8bd5\u4e86\u4e0b\u6808\u7684\u6548\u7387\u8fd8 […]<\/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":[157],"_links":{"self":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2725"}],"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=2725"}],"version-history":[{"count":12,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2725\/revisions"}],"predecessor-version":[{"id":2737,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2725\/revisions\/2737"}],"wp:attachment":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2725"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2725"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2725"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}