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Dhwani
mail server logs
0 Answer(s)      3 years and 4 months ago
Posted in : Java Beginners


Imagine you have a mail server log. It has many lines. Each line tells a Person A sent an email to Person B. There are two rules:â?¨1. If Person X sent an email to Person Y, they are in a same group. Similarly, if Y also sent an email to Z, Z is in the same group too.â?¨2. If Person A didn't send any email to any person in a group or didn't receive any email from any person in a group, A shouldn't be in the group.â?¨So, there may be many groups from the server log. Please implement a Java program to process the log and eventually for every group, print out every member in the group.

First example: Y Z X Y K X A B C A M L The program should print: There are 3 groups Group 1: Y, Z, X, K Group 2: A, B, C Group 3: M, L

Second example: A C B C The program should print: There is 1 group Group 1: A, C, B


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