Devcode Ravi

What will be the output of the following code?

console.log(a);
var a = 5;



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10 months ago | [YT] | 0

Devcode Ravi

What is the purpose of the JOIN clause in SQL?
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1 year ago | [YT] | 1

Devcode Ravi

Which SQL clause is used to filter records in a SELECT statement?
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1 year ago | [YT] | 1

Devcode Ravi

#Challenge Day1
Consider a binary max-heap implemented using an array. Which among the following arrays represents a binary max-heap?




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1 year ago | [YT] | 0

Devcode Ravi

#Challenge Day1
A 3-ary max heap is like a binary max heap, but instead of 2 children, nodes have 3 children. A 3-ary heap can be represented by an array as follows: The root is stored in the first location, a[0], nodes in the next level, from left to right, is stored from a[1] to a[3]. The nodes from the second level of the tree from left to right are stored from a[4] location onward. An item x can be inserted into a 3-ary heap containing n items by placing x in the location a[n] and pushing it up the tree to satisfy the heap property. Which one of the following is a valid sequence of elements in an array representing 3-ary max heap?


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1 year ago | [YT] | 5

Devcode Ravi

6. Which one of the following is not true?




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1 year ago | [YT] | 0

Devcode Ravi

4. To access the services of the operating system, the interface is provided by the ___________
.
.
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1 year ago | [YT] | 0

Devcode Ravi

3. In Operating Systems, which of the following is/are CPU scheduling algorithms?



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1 year ago | [YT] | 0

Devcode Ravi

1. What is an operating system?
.
.

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1 year ago | [YT] | 0

Devcode Ravi

Which data structure can be used to evaluate postfix expressions efficiently?

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1 year ago | [YT] | 0