What is difference between hashmap and hashtable?
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Which is faster array or list?
What are different types of sorting techniques?
What is raid (redundant array of inexpensive disks)? Explain its level?
For the following COBOL code, draw the Binary tree? 01 STUDENT_REC. 02 NAME. 03 FIRST_NAME PIC X(10). 03 LAST_NAME PIC X(10). 02 YEAR_OF_STUDY. 03 FIRST_SEM PIC XX. 03 SECOND_SEM PIC XX.
What is 1d array?
Explain what is a spanning tree?
What is difference between concurrenthashmap and hashtable?
What is the best case for bubble sort?
Define graph?
Explain merge sort algorithms.
Can nsarray contain nil?
What is the use of data structure in real life?