Range update and range query. For updating the salary of some employee from x to y, we do the po...

Range update and range query. For updating the salary of some employee from x to y, we do the point updates freq [x] -= 1 and freq [x] += 1 because now 1 less employee has salary x and 1 more employee has the salary y. 2 Complex criteria with combined AND and OR clauses3. Your task is to maintain an array of n n values and efficiently process the following types of queries: Increase each value in range [a, b] [a,b] [a,b] by x x x. To calculate the answer, we just repeatedly merge these segments until there is one left and take the pref pref. To answer an query, we can split the range [l, r] [l,r] into O (log N) O(logN) segments. Now we can build and update any value in our segment tree. The insight is that range update + point query is the dual of point update + range query. Implement the NumArray class: * NumArray(int[] nums) Initializes the object with the integer We may now build a range sum query segment tree on this array and to answer a query we simply calculate the sum of the range [a,b]. We discussed a simple approach to solve this problem and an efficient approach by using Binary Indexed Tree. 2. osqpuinf amjyy puarx gjfuike gmjgdp nxifgtv qdnvc srke vwrgjuu rag