Create sum-of-absolute-differences-in-a-sorted-array.cpp

Author: kamyu104

C++/sum-of-absolute-differences-in-a-sorted-array.cpp

@@ -0,0 +1,16 @@
+// Time:  O(n)
+// Space: O(1)
+
+class Solution {
+public:
+    vector<int> getSumAbsoluteDifferences(vector<int>& nums) {
+        int prefix = 0, suffix = accumulate(cbegin(nums), cend(nums), 0);
+        vector<int> result;
+        for (int i = 0; i < size(nums); ++i) {
+            suffix -= nums[i];
+            result.emplace_back((i * nums[i] - prefix) + (suffix - ((size(nums) - 1) - i) * nums[i]));
+            prefix += nums[i];
+        }
+        return result;
+    }
+};