From 5a3738ac080025514eef12872a8e0614cab85276 Mon Sep 17 00:00:00 2001
From: begeekmyfriend <begeekmyfriend@gmail.com>
Date: Tue, 12 Sep 2017 09:37:27 +0800
Subject: [PATCH] Remove duplicates from sorted array

Signed-off-by: begeekmyfriend <begeekmyfriend@gmail.com>
---
 .../Makefile                                  |  2 ++
 .../rm_dups.c                                 | 33 +++++++++++++++++++
 2 files changed, 35 insertions(+)
 create mode 100644 080_remove_duplicates_from_sorted_array_ii/Makefile
 create mode 100644 080_remove_duplicates_from_sorted_array_ii/rm_dups.c

diff --git a/080_remove_duplicates_from_sorted_array_ii/Makefile b/080_remove_duplicates_from_sorted_array_ii/Makefile
new file mode 100644
index 0000000..863c440
--- /dev/null
+++ b/080_remove_duplicates_from_sorted_array_ii/Makefile
@@ -0,0 +1,2 @@
+all:
+	gcc -O2 -o test rm_dups.c
diff --git a/080_remove_duplicates_from_sorted_array_ii/rm_dups.c b/080_remove_duplicates_from_sorted_array_ii/rm_dups.c
new file mode 100644
index 0000000..6156057
--- /dev/null
+++ b/080_remove_duplicates_from_sorted_array_ii/rm_dups.c
@@ -0,0 +1,33 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int removeDuplicates(int* nums, int numsSize) {
+    int i = 0, j, x, y, count = 0;
+    while (i < numsSize) {
+        for (j = i + 1; j < numsSize && nums[i] == nums[j]; j++) {}
+        int diff = j - i;
+        if (diff > 2) {
+            for (x = i + 2, y = j; y < numsSize; x++, y++) {
+                nums[x] = nums[y];
+            }
+            numsSize -= diff - 2;
+        }
+        count += diff > 2 ? 2 : diff;
+        i += diff > 2 ? 2 : diff;
+    }
+    return count;
+}
+
+int main(int argc, char **argv)
+{
+    int i, count = argc - 1;
+    int *nums = malloc(count * sizeof(int));
+    for (i = 0; i < count; i++) {
+        nums[i] = atoi(argv[i + 1]);
+    }
+    count = removeDuplicates(nums, count);
+    for (i = 0; i < count; i++) {
+        printf("%d ", nums[i]);
+    }
+    printf("\n");
+}