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What are dependencies in DBMS and how it will impact data? How normalization can remove dependencies in DBMS?
What are anomalies of data and how anomalies will remove from the Database?
Why we use joins in Database Management System? Define any four joins use in SQL with examples?
Define Database Management system? Why we use a Database Management system and how it is better than File System?
Filter Unique Characters
Given a string
myString as an input, write a JS program to find the unique characters from the myString.
Quick Tip
You can use the array method indexOf().
Input
- The input will be a single line containing a string myString
Output
- The output should be a single line containing an array of unique characters
Sample Input 1
Was it a cat I saw?
Sample Output 1
[
'W', 'a', 's', ' ',
'i', 't', 'c', 'I',
'w', '?'
]
Sample Input 2
I did, did I?
Sample Output 2
[ 'I', ' ', 'd', 'i', ',', '?' ]
the out put should appeared same as shown in sample output's
/* This is a javaScript question, and I will also send the code with function that have to complete :-*/
"use strict";
process.stdin.resume();
process.stdin.setEncoding("utf-8");
let inputString = "";
let currentLine = 0;
process.stdin.on("data", (inputStdin) => {
inputString += inputStdin;
});
process.stdin.on("end", (_) => {
inputString = inputString.trim().split("\n").map((str) => str.trim());
main();
});
function readLine() {
return inputString[currentLine++];
}
/* Please do not modify anything above this line */
function main() {
const myString = readLine();
/* complete thefunction */
}
Please help me.
String Slicing
Given two strings
inputString and subString as inputs, write a JS program to slice the inputString if it includes the subString. Slice the inputString starting from the subString to the end of the inputString.Input
- The first line of input contains a string inputString
- The second line of input contains a string subString
Output
- The output should be a sliced string or inputString (if the inputString does not include the subString)
Sample Input 1
JavaScript
S
Sample Output 1
Script
Sample Input 2
Language
air
Sample Output 2
Language
This is a javaScript question, and I will also send the code with function that have to complete :-
"use strict";
process.stdin.resume();
process.stdin.setEncoding("utf-8");
let inputString = "";
let currentLine = 0;
process.stdin.on("data", (inputStdin) => {
inputString += inputStdin;
});
process.stdin.on("end", (_) => {
inputString = inputString.trim().split("\n").map((str) => str.trim());
main();
});
function readLine() {
return inputString[currentLine++];
}
/* Please do not modify anything above this line */
function main() {
const inputString = readLine();
const subString = readLine();
/* complete the function*/
}
You are given a square matrix A of dimensions NxN. You need to apply the below given 3 operations on the matrix A.
Rotation: It is represented as R S where S is an integer in {90, 180, 270, 360, 450, ...} which denotes the number of degrees to rotate. You need to rotate the matrix A by angle S in the clockwise direction. The angle of rotation(S) will always be in multiples of 90 degrees.
Update: It is represented as U X Y Z. In initial matrix A (as given in input), you need to update the element at row index X and column index Y with value Z.
After the update, all the previous rotation operations have to be applied to the updated initial matrix.
Querying: It is represented as Q K L. You need to print the value at row index K and column index L of the matrix A. Input
The first line contains a single integer N.
Next N lines contain N space-separated integers Aij (i - index of the row, j - index of the column).
Next lines contain various operations on the array. Each operation on each line (Beginning either with R, U or Q).
-1 will represent the end of input.Output
For each Query operation print the element present at row index K and colum index L of the matrix in its current state.Explanation
For Input:
2
1 2
3 4
R 90
Q 0 0
Q 0 1
R 90
Q 0 0
U 0 0 6
Q 1 1
-1
Initial Matrix
1 2
3 4
For R 90, clockwise rotation by 90 degrees, the matrix will become
3 1
4 2
For Q 0 0, print the element at row index 0 and column index 0 of A, which is 3.
For Q 0 1, print the element at row index 0 and column index 1 of A, which is 1.
Again for R 90, clockwise rotation by 90 degrees, the matrix will become
4 3
2 1
For Q 0 0, print the element at row index 0 and column index 0 of A, which is 4.
For U 0 0 6, update the value at row index 0 and column index 1 in the initial matrix to 6. So the updated matrix will be,
6 2
3 4
After updating, we need to rotate the matrix by sum of all rotation angles applied till now(i.e. R 90 and R 90 => 90 + 90 => 180 degrees in clockwise direction).
After rotation the matrix will now become
4 3
2 6
Next for Q 1 1, print the element at row index 1 and column index 1 of A, which is 6.
output
3
1
4
6
Sample Input 1
2
1 2
3 4
R 90
Q 0 0
Q 0 1
R 90
Q 0 0
U 0 0 6
Q 1 1
-1
Sample Output 1
3
1
4
6
Sample Input 2
2
5 6
7 8
R 90
Q 0 1
R 270
Q 1 1
R 180
U 0 0 4
Q 0 0
-1
Sample Output 2
5
8
8
please give me the best solution.
Take an integer from the user and display the factorial of that number
Write a program to read a positive integer number 'n' and generate the numbers in the [5 M] following way. If entered number is 3, the output will be as follows:
9 4 1 0 1 2 3
For all the videos, represent the number of views in multiples of thousands.
For example, if the number of views of a video is 17,200, it is represented as 17.2 in the output.
Note:
- Sort the output in the descending order ofno_of_views_in_thousands, and then in the alphabetical order ofname
Table: video
video_id name no_of_views_in_thousands
... ... ...just tell me the form of converting the views of videos for EX 17,200 into 17.2.
and the code i had written for this is:-
SELECT
video_id,
name,
(no_of_views) AS no_of_views_in_thousands
FROM
video
WHERE
cast(strftime("%d", no_of_views) AS float)
ORDER BY
no_of_views_in_thousands DESC,
name ASC;
