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SmokerXSmokerX
committed
20161009
1 parent fd64d6e commit ccc9a97

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8 files changed

+239
-1
lines changed

8 files changed

+239
-1
lines changed

‎Algorithms/161. One Edit Distance/Solution.java

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public class Solution {
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public boolean isOneEditDistance(String s, String t) {
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if (s.length()>t.length()) {
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return isOneEditDistance(t, s);
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}
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if (s.length()+1<t.length()) {
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return false;
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}
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char[] cs=s.toCharArray();
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char[] ct=t.toCharArray();
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for (int i = 0; i < cs.length; i++) {
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if (cs[i]!=ct[i]) {
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if (s.length()==t.length()) {
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return s.substring(i+1,s.length()).equals(t.substring(i+1,t.length()));
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}else{
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return s.substring(i,s.length()).equals(t.substring(i+1,t.length()));
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}
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}
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}
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return s.length()!=t.length();
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}
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}

‎Algorithms/409. Longest Palindrome/Solution.java

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public class Solution {
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public int longestPalindrome(String s) {
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int[] nums=new int[52];
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char[] cs=s.toCharArray();
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for (int i = 0; i < cs.length; i++) {
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if (cs[i]>=97) {
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nums[cs[i]-97+26]++;
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}else{
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nums[cs[i]-65]++;
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}
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}
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int ans=0;
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for (int i = 0; i < nums.length; i++) {
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ans+=nums[i]/2*2;
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if (ans%2==0) {
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ans+=nums[i]%2;
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}
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}
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return ans;
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}
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}

‎Algorithms/415. Add Strings/Solution.java

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public class Solution {
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public String addStrings(String num1, String num2) {
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StringBuffer sb=new StringBuffer();
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int l1=num1.length();
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int l2=num2.length();
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char[] c1=num1.toCharArray();
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char[] c2=num2.toCharArray();
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int carry=0;
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for (int i = 0; i <l1||i<l2; i++) {
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int a1=i<l1?c1[l1-1-i]-48:0;
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int a2=i<l2?c2[l2-1-i]-48:0;
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int ans=a1+a2+carry;
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sb.append(ans%10);
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carry=ans/10;
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}
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if (carry==1) {
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sb.append("1");
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}
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return sb.reverse().toString();
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}
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}

‎Algorithms/417. Pacific Atlantic Water Flow/Solution.java

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public class Solution {
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boolean[][] rPO;
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int[][] v4PO;
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boolean[][] rAO;
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int[][] v4AO;
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int m;
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int n;
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int[][] matrix;
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public List<int[]> pacificAtlantic(int[][] matrix) {
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this.matrix = matrix;
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m = matrix.length;
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List<int[]> res = new ArrayList<int[]>();
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if (m == 0) {
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return res;
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}
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n = matrix[0].length;
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rPO = new boolean[m][n];
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v4PO = new int[m][n];
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rAO = new boolean[m][n];
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v4AO = new int[m][n];
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for (int i = 0; i < m; i++) {
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visitForPacificOcean(i, 0, 0);
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visitForAtlanticOcean(i, n - 1, 0);
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}
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for (int i = 0; i < n; i++) {
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visitForPacificOcean(0, i, 0);
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visitForAtlanticOcean(m - 1, i, 0);
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}
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for (int i = 0; i < m; i++) {
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for (int j = 0; j < n; j++) {
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if (rPO[i][j] && rAO[i][j]) {
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int[] ans = { i, j };
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res.add(ans);
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}
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}
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}
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return res;
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}
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public void visitForPacificOcean(int x, int y, int lastHeight) {
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if (x >= 0 && x < m && y >= 0 && y < n && v4PO[x][y] == 0 && matrix[x][y] >= lastHeight) {
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rPO[x][y] = true;
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v4PO[x][y] = 1;
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visitForPacificOcean(x - 1, y, matrix[x][y]);
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visitForPacificOcean(x + 1, y, matrix[x][y]);
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visitForPacificOcean(x, y - 1, matrix[x][y]);
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visitForPacificOcean(x, y + 1, matrix[x][y]);
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}
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}
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public void visitForAtlanticOcean(int x, int y, int lastHeight) {
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if (x >= 0 && x < m && y >= 0 && y < n && v4AO[x][y] == 0 && matrix[x][y] >= lastHeight) {
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rAO[x][y] = true;
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v4AO[x][y] = 1;
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visitForAtlanticOcean(x - 1, y, matrix[x][y]);
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visitForAtlanticOcean(x + 1, y, matrix[x][y]);
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visitForAtlanticOcean(x, y - 1, matrix[x][y]);
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visitForAtlanticOcean(x, y + 1, matrix[x][y]);
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}
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}
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}

‎README.md

Lines changed: 9 additions & 1 deletion
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@@ -160,7 +160,7 @@
160160
|158|[Read N Characters Given Read4 II - Call multiple times](https://leetcode.com/problems/read-n-characters-given-read4-ii-call-multiple-times/)|Hard|noNote|no|no|no|no|no|
161161
|159|[Longest Substring with At Most Two Distinct Characters](https://leetcode.com/problems/longest-substring-with-at-most-two-distinct-characters/)|Hard|noNote|no|no|no|no|no|
162162
|160|[Intersection of Two Linked Lists](https://leetcode.com/problems/intersection-of-two-linked-lists/)|Easy|noNote|[Java](https://github.com/corpsepiges/leetcode/blob/master/Algorithms/160. Intersection of Two Linked Lists/Solution.java)|[Python](https://github.com/corpsepiges/leetcode/blob/master/Algorithms/160. Intersection of Two Linked Lists/Solution.py)|no|no|no|
163-
|161|[One Edit Distance](https://leetcode.com/problems/one-edit-distance/)|Medium|noNote|no|no|no|no|no|
163+
|161|[One Edit Distance](https://leetcode.com/problems/one-edit-distance/)|Medium|noNote|[Java](https://github.com/corpsepiges/leetcode/blob/master/Algorithms/161. One Edit Distance/Solution.java)|no|no|no|no|
164164
|162|[Find Peak Element](https://leetcode.com/problems/find-peak-element/)|Medium|noNote|[Java](https://github.com/corpsepiges/leetcode/blob/master/Algorithms/162. Find Peak Element/Solution.java)|no|no|no|no|
165165
|163|[Missing Ranges](https://leetcode.com/problems/missing-ranges/)|Medium|noNote|no|no|no|no|no|
166166
|164|[Maximum Gap](https://leetcode.com/problems/maximum-gap/)|Hard|noNote|[Java](https://github.com/corpsepiges/leetcode/blob/master/Algorithms/164. Maximum Gap/Solution.java)|no|no|no|no|
@@ -390,3 +390,11 @@
390390
|405|[Convert a Number to Hexadecimal](https://leetcode.com/problems/convert-a-number-to-hexadecimal/)|Easy|noNote|[Java](https://github.com/corpsepiges/leetcode/blob/master/Algorithms/405. Convert a Number to Hexadecimal/Solution.java)|no|no|no|no|
391391
|406|[Queue Reconstruction by Height](https://leetcode.com/problems/queue-reconstruction-by-height/)|Medium|noNote|[Java](https://github.com/corpsepiges/leetcode/blob/master/Algorithms/406. Queue Reconstruction by Height/Solution.java)|no|no|no|no|
392392
|407|[Trapping Rain Water II](https://leetcode.com/problems/trapping-rain-water-ii/)|Hard|noNote|no|no|no|no|no|
393+
|408|[Valid Word Abbreviation](https://leetcode.com/problems/valid-word-abbreviation/)|Easy|noNote|no|no|no|no|no|
394+
|409|[Longest Palindrome](https://leetcode.com/problems/longest-palindrome/)|Easy|noNote|[Java](https://github.com/corpsepiges/leetcode/blob/master/Algorithms/409. Longest Palindrome/Solution.java)|no|no|no|no|
395+
|410|[Split Array Largest Sum](https://leetcode.com/problems/split-array-largest-sum/)|Hard|noNote|no|no|no|no|no|
396+
|411|[Minimum Unique Word Abbreviation](https://leetcode.com/problems/minimum-unique-word-abbreviation/)|Hard|noNote|no|no|no|no|no|
397+
|415|[Add Strings](https://leetcode.com/problems/add-strings/)|Easy|noNote|[Java](https://github.com/corpsepiges/leetcode/blob/master/Algorithms/415. Add Strings/Solution.java)|no|no|no|no|
398+
|416|[Partition Equal Subset Sum](https://leetcode.com/problems/partition-equal-subset-sum/)|Medium|noNote|no|no|no|no|no|
399+
|417|[Pacific Atlantic Water Flow](https://leetcode.com/problems/pacific-atlantic-water-flow/)|Medium|noNote|[Java](https://github.com/corpsepiges/leetcode/blob/master/Algorithms/417. Pacific Atlantic Water Flow/Solution.java)|no|no|no|no|
400+
|418|[Sentence Screen Fitting](https://leetcode.com/problems/sentence-screen-fitting/)|Hard|noNote|no|no|no|no|no|

‎java/409. Longest Palindrome.java

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public class Solution {
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public int longestPalindrome(String s) {
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int[] nums=new int[52];
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char[] cs=s.toCharArray();
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for (int i = 0; i < cs.length; i++) {
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if (cs[i]>=97) {
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nums[cs[i]-97+26]++;
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}else{
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nums[cs[i]-65]++;
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}
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}
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int ans=0;
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for (int i = 0; i < nums.length; i++) {
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ans+=nums[i]/2*2;
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if (ans%2==0) {
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ans+=nums[i]%2;
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}
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}
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return ans;
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}
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}

‎java/415. Add Strings.java

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public class Solution {
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public String addStrings(String num1, String num2) {
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StringBuffer sb=new StringBuffer();
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int l1=num1.length();
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int l2=num2.length();
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char[] c1=num1.toCharArray();
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char[] c2=num2.toCharArray();
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int carry=0;
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for (int i = 0; i <l1||i<l2; i++) {
10+
int a1=i<l1?c1[l1-1-i]-48:0;
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int a2=i<l2?c2[l2-1-i]-48:0;
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int ans=a1+a2+carry;
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sb.append(ans%10);
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carry=ans/10;
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}
16+
if (carry==1) {
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sb.append("1");
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}
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return sb.reverse().toString();
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}
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}

‎java/417. Pacific Atlantic Water Flow.java

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public class Solution {
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boolean[][] rPO;
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int[][] v4PO;
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boolean[][] rAO;
5+
int[][] v4AO;
6+
int m;
7+
int n;
8+
int[][] matrix;
9+
10+
public List<int[]> pacificAtlantic(int[][] matrix) {
11+
this.matrix = matrix;
12+
m = matrix.length;
13+
List<int[]> res = new ArrayList<int[]>();
14+
if (m == 0) {
15+
return res;
16+
}
17+
n = matrix[0].length;
18+
rPO = new boolean[m][n];
19+
v4PO = new int[m][n];
20+
rAO = new boolean[m][n];
21+
v4AO = new int[m][n];
22+
for (int i = 0; i < m; i++) {
23+
visitForPacificOcean(i, 0, 0);
24+
visitForAtlanticOcean(i, n - 1, 0);
25+
}
26+
for (int i = 0; i < n; i++) {
27+
visitForPacificOcean(0, i, 0);
28+
visitForAtlanticOcean(m - 1, i, 0);
29+
}
30+
for (int i = 0; i < m; i++) {
31+
for (int j = 0; j < n; j++) {
32+
if (rPO[i][j] && rAO[i][j]) {
33+
int[] ans = { i, j };
34+
res.add(ans);
35+
}
36+
}
37+
}
38+
return res;
39+
}
40+
41+
public void visitForPacificOcean(int x, int y, int lastHeight) {
42+
if (x >= 0 && x < m && y >= 0 && y < n && v4PO[x][y] == 0 && matrix[x][y] >= lastHeight) {
43+
rPO[x][y] = true;
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v4PO[x][y] = 1;
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visitForPacificOcean(x - 1, y, matrix[x][y]);
46+
visitForPacificOcean(x + 1, y, matrix[x][y]);
47+
visitForPacificOcean(x, y - 1, matrix[x][y]);
48+
visitForPacificOcean(x, y + 1, matrix[x][y]);
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}
50+
}
51+
52+
public void visitForAtlanticOcean(int x, int y, int lastHeight) {
53+
if (x >= 0 && x < m && y >= 0 && y < n && v4AO[x][y] == 0 && matrix[x][y] >= lastHeight) {
54+
rAO[x][y] = true;
55+
v4AO[x][y] = 1;
56+
visitForAtlanticOcean(x - 1, y, matrix[x][y]);
57+
visitForAtlanticOcean(x + 1, y, matrix[x][y]);
58+
visitForAtlanticOcean(x, y - 1, matrix[x][y]);
59+
visitForAtlanticOcean(x, y + 1, matrix[x][y]);
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}
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}
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}

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