diff --git a/leetcode/README.md b/leetcode/README.md
index a9bf3c79..bffa4aa3 100644
--- a/leetcode/README.md
+++ b/leetcode/README.md
@@ -63,4 +63,7 @@ LeetCode
 |938|[Range Sum of BST](https://leetcode.com/problems/range-sum-of-bst/) | [C](./src/938.c)|Easy|
 |965|[Univalued Binary Tree](https://leetcode.com/problems/univalued-binary-tree/) | [C](./src/965.c)|Easy|
 |977|[Squares of a Sorted Array](https://leetcode.com/problems/squares-of-a-sorted-array/) | [C](./src/977.c)|Easy|
-|1189|[Maximum Number of Balloons](https://leetcode.com/problems/maximum-number-of-balloons/) | [C](./src/1189.c)|Easy|
\ No newline at end of file
+|1089|[Duplicate Zeros](https://leetcode.com/problems/duplicate-zeros/) | [C](./src/1089.c)|Easy|
+|1184|[Distance Between Bus Stops](https://leetcode.com/problems/distance-between-bus-stops/) | [C](./src/1184.c)|Easy|
+|1189|[Maximum Number of Balloons](https://leetcode.com/problems/maximum-number-of-balloons/) | [C](./src/1189.c)|Easy|
+|1207|[Unique Number of Occurrences](https://leetcode.com/problems/unique-number-of-occurrences/) | [C](./src/1207.c)|Easy|
diff --git a/leetcode/src/1089.c b/leetcode/src/1089.c
new file mode 100644
index 00000000..df1cfbb7
--- /dev/null
+++ b/leetcode/src/1089.c
@@ -0,0 +1,20 @@
+void duplicateZeros(int* arr, int arrSize){
+    int i, start = 0;
+    int *tmp = malloc(arrSize * sizeof(int));
+    /* Copy arr into tmp arr */
+    for(i = 0; i < arrSize; i++) {
+        tmp[i] = arr[i];
+    }
+    i = 0;
+    for(start = 0; start < arrSize; start++) {
+        arr[start] = tmp[i];
+        if(tmp[i] == 0) {
+            start++;
+            if (start < arrSize)
+                arr[start] = 0;
+        }
+        i++;
+    }
+}
+
+
diff --git a/leetcode/src/1184.c b/leetcode/src/1184.c
new file mode 100644
index 00000000..50aef4a4
--- /dev/null
+++ b/leetcode/src/1184.c
@@ -0,0 +1,16 @@
+int distanceBetweenBusStops(int* distance, int distanceSize, int start, int destination){
+
+  int sum1 = 0, sum2 = 0;
+  if (start > destination) {
+      int tmp = start;
+      start = destination;
+      destination = tmp;
+  }
+  for (auto i = 0; i < distanceSize; ++i) {
+    if (i >= start && i < destination)
+        sum1 += distance[i];
+    else
+        sum2 += distance[i];
+  }
+  return sum1 < sum2 ? sum1 : sum2;
+}
diff --git a/leetcode/src/1207.c b/leetcode/src/1207.c
new file mode 100644
index 00000000..e8e830b0
--- /dev/null
+++ b/leetcode/src/1207.c
@@ -0,0 +1,25 @@
+#define MAP_SIZE 2048
+
+int cmpvalue(const void *a, const void *b) {
+    return *(int *)b - *(int *)a;
+}
+bool uniqueOccurrences(int* arr, int arrSize){
+    int *map = calloc(MAP_SIZE, sizeof(int));
+    int i;
+    for(i = 0; i < arrSize; i++) {
+        if (arr[i] < 0)
+            map[arr[i] + MAP_SIZE/2] += 1;
+        else
+            map[arr[i]] += 1;
+    }
+    /* number of occurrences is sorted by decreasing order
+       Ex: 3 2 1 0 0 0 0 */
+    qsort(map, MAP_SIZE, sizeof(int), cmpvalue);
+    i = 0;
+    while(map[i]) {
+        if(map[i] == map[i+1])
+            return 0;
+        i++;
+    }
+    return 1;
+}