// Simple Java program to compute sum of // subarray elements classGFG { // Computes sum all sub-array publicstaticlongSubArraySum(intarr[],intn) { longresult = 0; // Pick starting point for(inti = 0; i < n; i +
原文:https://www.geeksforgeeks.org/count-pairs-with-given-sum/ Given an array of integers, and a number ‘sum’, find the number of pairs of integers in t
An example test case would be : K=110a=[20,-10,50,60,-1000] The same two pointer idea you mentioned is written on GFG (here) and it fails on the above case. Is there a way to do this in O(n) time and O(1) auxiliary space ? Complexity of the solution isO(N*log(N)) For...