add

5.leetcode/src/com/fanxb/common/Q151.java

@@ -8,7 +8,7 @@ public class Q151 {
         StringBuilder temp = new StringBuilder();
         for (int i = 0; i < s.length(); i++) {
             if (s.charAt(i) == ' ') {
-                if (!temp.isEmpty()) {
+                if (temp.length() > 0) {
                     stack.push(temp.toString());
                     temp = new StringBuilder();
                 }
@@ -16,7 +16,7 @@ public class Q151 {
                 temp.append(s.charAt(i));
             }
         }
-        if (!temp.isEmpty()) stack.push(temp.toString());
+        if (temp.length() > 0) stack.push(temp.toString());
         StringBuilder res = new StringBuilder();
         res.append(stack.pop());
         while (!stack.isEmpty()) res.append(" ").append(stack.pop());

5.leetcode/src/com/fanxb/common/Q401.java

@@ -1,6 +1,5 @@
 package com.fanxb.common;
 
-import com.sun.tools.jconsole.JConsoleContext;
 
 import java.util.*;
 

5.leetcode/src/com/fanxb/common/Q45.java

@@ -18,7 +18,7 @@ public class Q45 {
             maxIndex = Math.max(maxIndex, i+nums[i]);
             //走到一步的边界了，已经找到下一跳的起点
             if(i==end){
-                steps++;
+                step++;
                 end = maxIndex;
             }
         }

5.leetcode/src/com/fanxb/common/Q68.java

@@ -1,6 +1,7 @@
 package com.fanxb.common;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.LinkedList;
 import java.util.List;
 
@@ -12,44 +13,54 @@ import java.util.List;
  */
 public class Q68 {
     public List<String> fullJustify(String[] words, int maxWidth) {
-        int length = words.length, leftWidth = maxWidth;
+        List<String> res = new ArrayList<>();
-        List<String> lineWord = new LinkedList<>();
+        List<String> temp = new ArrayList<>();
-        List<List<String>> lineList = new LinkedList<>();
+        int size = words.length, lengthCount = 0, usedWidth = 0;
-        for (int i = 0; i < length; i++) {
+        for (int i = 0; i < size; i++) {
-            if (lineWord.isEmpty()) {
+            lengthCount += words[i].length() + 1;
-                lineWord.add(words[i]);
+            if (lengthCount > maxWidth + 1) {
-                leftWidth -= words[i].length();
+                //说明放不下了
-            } else {
+                res.add(dealOne(temp, maxWidth, usedWidth, false));
-                if (leftWidth >= words[i].length() + 1) {
+                temp.clear();
-                    //可以放下
+                usedWidth = 0;
-                    lineWord.add(words[i]);
+                lengthCount = words[i].length() + 1;
-                    leftWidth -= words[i].length() + 1;
-                } else {
-                    //放不下了，需要新开一行
-                    lineList.add(lineWord);
-                    lineWord = new LinkedList<>();
-                    leftWidth = maxWidth;
             }
+            temp.add(words[i]);
+            usedWidth += words[i].length();
         }
+        if (!temp.isEmpty()) {
+            res.add(dealOne(temp, maxWidth, usedWidth, true));
         }
-        List<String> res = new ArrayList<>(lineList.size());
-        for (int i = 0; i < lineList.size() - 1; i++) {
-            addToRes(res, lineList.get(i), false);
-        }
-        addToRes(res, lineList.get(lineList.size() - 1), true);
         return res;
     }
 
-    private void addToRes(List<String> res, List<String> line, boolean lastLine) {
+    private String dealOne(List<String> temp, int maxWidth, int usedWidth, boolean lastOne) {
-        StringBuilder temp = new StringBuilder();
+        StringBuilder res = new StringBuilder();
-        temp.append(line.get(0));
+        res.append(temp.get(0));
-        if (lastLine) {
+        int size = temp.size();
-            for (int i = 1; i < line.size(); i++) temp.append(' ').append(line.get(i));
+        if (size == 1) return res.append(" ".repeat(maxWidth - usedWidth)).toString();
+        if (lastOne) {
+            for (int i = 1; i < size; i++) res.append(' ').append(temp.get(i));
+            return res.append(" ".repeat(maxWidth - res.length())).toString();
         } else {
-
+            //每个间隙的长度
+            int everyWidth = (maxWidth - usedWidth) / (size - 1);
+            //前几个间隙需要加一个空格
+            int needPlusCount = (maxWidth - usedWidth) % (size - 1);
+            for (int i = 1; i < size; i++) {
+                res.append(" ".repeat(everyWidth));
+                if (needPlusCount > 0) {
+                    res.append(' ');
+                    needPlusCount--;
                 }
+                res.append(temp.get(i));
+            }
+        }
+        return res.toString();
     }
 
     public static void main(String[] args) {
+        Q68 q68 = new Q68();
+        System.out.println(q68.fullJustify(new String[]{"This", "is", "an", "example", "of", "text", "justification."}, 16).toString());
     }
 }