Create maximum-absolute-sum-of-any-subarray.cpp

Author: kamyu104

C++/maximum-absolute-sum-of-any-subarray.cpp

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+// Time:  O(n)
+// Space: O(1)
+
+class Solution {
+public:
+    int maxAbsoluteSum(vector<int>& nums) {
+        int curr = 0, mx = 0, mn = 0;
+        for (const auto& num : nums) {
+            curr += num;
+            mx = max(mx, curr);
+            mn = min(mn, curr);
+        }
+        return mx - mn;
+    }
+};
+
+// Time:  O(n)
+// Space: O(1)
+class Solution2 {
+public:
+    int maxAbsoluteSum(vector<int>& nums) {
+        partial_sum(begin(nums), end(nums), begin(nums));
+        return max(*max_element(cbegin(nums), cend(nums)), 0) -
+               min(*min_element(cbegin(nums), cend(nums)), 0);
+    }
+};