add

5.leetcode/src/com/fanxb/common/Q26.java

@@ -1,5 +1,7 @@
 package com.fanxb.common;
 
+import java.util.Arrays;
+
 /**
  * TODO
  *
@@ -23,7 +25,21 @@ public class Q26 {
         return count;
     }
 
+    public int newRemoveDuplicates(int[] nums) {
+        int i = 0, j = 1;
+        while (j < nums.length) {
+            if (nums[j] != nums[i]) {
+                nums[++i] = nums[j];
+            }
+            j++;
+        }
+        return i + 1;
+    }
+
+
     public static void main(String[] args) {
-        System.out.println(new Q26().removeDuplicates(new int[]{0, 0, 1, 1, 1, 2, 2, 3, 3, 4}));
+        int[] arr = new int[]{0, 0, 1, 1, 1, 2, 2, 3, 3, 4};
+        System.out.println(new Q26().newRemoveDuplicates(arr));
+        System.out.println(Arrays.toString(arr));
     }
 }

5.leetcode/src/com/fanxb/common/Q27.java

@@ -24,7 +24,20 @@ public class Q27 {
         return count;
     }
 
+    public int removeElement1(int[] nums, int val) {
+        int i = 0, j = 0;
+        while (j < nums.length) {
+            if (nums[j] != val) {
+                nums[i++] = nums[j];
+            }
+            j++;
+        }
+        return i;
+    }
+
     public static void main(String[] args) {
-        System.out.println(new Q27().removeElement(new int[]{0, 1, 2, 2, 3, 0, 4, 2}, 2));
+        int[] arr = new int[]{0, 1, 2, 2, 3, 0, 4, 2};
+        System.out.println(new Q27().removeElement1(arr, 2));
+        System.out.println(Arrays.toString(arr));
     }
 }

5.leetcode/src/com/fanxb/common/Q88.java

@@ -35,14 +35,19 @@ public class Q88 {
         int[] nums1Copy = new int[m];
         System.arraycopy(nums1, 0, nums1Copy, 0, m);
         for (int i = 0, j = 0, k = 0; k < m + n; k++) {
-            
+            if (j>=n || (i < m && nums1Copy[i] < nums2[j])) {
+                nums1[k] = nums1Copy[i++];
+            } else {
+                nums1[k] = nums2[j++];
+            }
         }
-
     }
 
 
     public static void main(String[] args) {
-        int[] nums1 = new int[12];
+        int[] nums1 = new int[]{1,2,3};
+        int[] nums2 = new int[]{};
+        new Q88().merge(nums1,3,nums2,0);
         System.out.println(Arrays.toString(nums1));
     }
 }