msb-public-java
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LeetCode
mirror of https://github.com/yuanguangxin/LeetCode
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update q10/q746

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pull/6/head
yuanguangxin 5 years ago
parent e90f60d5a8
commit 44a5919c0b
3 changed files with 34 additions and 71 deletions
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38
.idea/workspace.xml
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@ -2,17 +2,9 @@
<project version="4">
<component name="ChangeListManager">
<list default="true" id="af7ffdf2-4ddc-4ed6-8222-60ed5acbc2ed" name="Default Changelist" comment="">
<change afterPath="$PROJECT_DIR$/src/Interviewing.md" afterDir="false" />
<change afterPath="$PROJECT_DIR$/src/q10/Solution.java" afterDir="false" />
<change afterPath="$PROJECT_DIR$/src/q110/q2/Solution.java" afterDir="false" />
<change afterPath="$PROJECT_DIR$/src/q110/q2/TreeNode.java" afterDir="false" />
<change afterPath="$PROJECT_DIR$/src/q22/f1/Solution.java" afterDir="false" />
<change afterPath="$PROJECT_DIR$/src/q22/f2/Solution.java" afterDir="false" />
<change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
<change beforePath="$PROJECT_DIR$/Rocket.md" beforeDir="false" afterPath="$PROJECT_DIR$/Rocket.md" afterDir="false" />
<change beforePath="$PROJECT_DIR$/src/q110/Solution.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/q110/q1/Solution.java" afterDir="false" />
<change beforePath="$PROJECT_DIR$/src/q110/TreeNode.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/q110/q1/TreeNode.java" afterDir="false" />
<change beforePath="$PROJECT_DIR$/src/q94/Solution.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/q94/Solution.java" afterDir="false" />
<change beforePath="$PROJECT_DIR$/src/q10/Solution.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/q10/Solution.java" afterDir="false" />
<change beforePath="$PROJECT_DIR$/src/q746/Solution.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/q746/Solution.java" afterDir="false" />
</list>
<option name="SHOW_DIALOG" value="false" />
<option name="HIGHLIGHT_CONFLICTS" value="true" />
@ -226,7 +218,7 @@
<workItem from="1580044287086" duration="50376000" />
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<workItem from="1581061282899" duration="68429000" />
<workItem from="1581061282899" duration="68993000" />
</task>
<task id="LOCAL-00001" summary="add q5/q7/q172">
<created>1580045439607</created>
@ -340,7 +332,14 @@
<option name="project" value="LOCAL" />
<updated>1581519773712</updated>
</task>
<option name="localTasksCounter" value="17" />
<task id="LOCAL-00017" summary="update md">
<created>1581704713975</created>
<option name="number" value="00017" />
<option name="presentableId" value="LOCAL-00017" />
<option name="project" value="LOCAL" />
<updated>1581704713975</updated>
</task>
<option name="localTasksCounter" value="18" />
<servers />
</component>
<component name="TypeScriptGeneratedFilesManager">
@ -363,7 +362,8 @@
<MESSAGE value="add q110/q450/q701" />
<MESSAGE value="add q1277" />
<MESSAGE value="add q42" />
<option name="LAST_COMMIT_MESSAGE" value="add q42" />
<MESSAGE value="update md" />
<option name="LAST_COMMIT_MESSAGE" value="update md" />
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<state x="320" y="115" key="#Inspections" timestamp="1581061018990">
@ -378,14 +378,14 @@
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@ -430,10 +430,10 @@
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</state>

61
src/q10/Solution.java
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@ -1,57 +1,20 @@
package q10;
/**
* 回溯法 对于*字符，可以直接忽略模式串中这一部分，或者删除匹配串的第一个字符，前提是它能够匹配模式串当前位置字符，即 pattern[0]。如果两种操作中有任何一种使得剩下的字符串能匹配，那么初始时，匹配串和模式串就可以被匹配。
*/
public class Solution {
public boolean isMatch(String s, String p) {
int i = 0;
int j = 0;
while (i < s.length()) {
char sc = s.charAt(i);
if (j >= p.length()) {
return false;
}
char pc = p.charAt(j);
public boolean isMatch(String text, String pattern) {
if (pattern.isEmpty()) return text.isEmpty();
boolean firstMatch = (!text.isEmpty() &&
(pattern.charAt(0) == text.charAt(0) || pattern.charAt(0) == '.'));
if (j + 1 < p.length()) {
if (p.charAt(j + 1) == '*') {
if (pc == '.') {
j+=2;
break;
} else if (pc == sc) {
while (i < s.length() && s.charAt(i) == pc) {
i++;
}
}
j += 2;
} else {
if ((sc == pc) || (pc == '.')) {
i++;
j++;
} else {
return false;
}
}
} else {
if ((sc == pc) || (pc == '.')) {
i++;
j++;
} else {
return false;
}
}
if (pattern.length() >= 2 && pattern.charAt(1) == '*') {
return (isMatch(text, pattern.substring(2)) ||
(firstMatch && isMatch(text.substring(1), pattern)));
} else {
return firstMatch && isMatch(text.substring(1), pattern.substring(1));
}
while (j < p.length()) {
if (p.charAt(j) == '*') {
j++;
} else {
if (j + 1 < p.length() && p.charAt(j) == '*') {
j += 2;
} else {
return false;
}
}
}
return true;
}
public static void main(String[] args) {

6
src/q746/Solution.java
Unescape View File

@ -1,5 +1,8 @@
package q746;
/**
* 动态规划 o(n) f[i] = cost[i] + min(f[i+1], f[i+2])
*/
class Solution {
public int minCostClimbingStairs(int[] cost) {
int f1 = 0, f2 = 0;
@ -7,9 +10,6 @@ class Solution {
int f0 = cost[i] + Math.min(f1, f2);
f2 = f1;
f1 = f0;
System.out.println("f0=" + f0);
System.out.println("f2=" + f2);
System.out.println("f1=" + f1);
}
return Math.min(f1, f2);
}

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