Can we put null key in hashmap?
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Define balanced trees?
What is array indexing?
Why sorting algorithms are important?
Which is better hashmap or hashtable?
How will you sort the elements of array in descending order?
Which sorting algorithm has minimum number of swaps?
List the two important key points of depth first search?
Explain the internal working of a hash map?
What is mean by selection sort?
Give the example of validating the parenthesis of expression using stack.
Is sorting a math skill?
State the rules to be followed during infix to postfix conversions?