Create find-the-student-that-will-replace-the-chalk.cpp

Author: kamyu104

C++/find-the-student-that-will-replace-the-chalk.cpp

@@ -0,0 +1,15 @@
+// Time:  O(n)
+// Space: O(1)
+
+class Solution {
+public:
+    int chalkReplacer(vector<int>& chalk, int k) {
+        k %= accumulate(cbegin(chalk), cend(chalk), 0LL);
+        for (int i = 0; i < size(chalk); k -= chalk[i++]) {
+            if (k < chalk[i]) {
+                return i;
+            }
+        }
+        return -1;
+    }
+};