I have been trying to solve this problem for some time now and I have partially managed to achieve it. I am trying to write a function that will return a nested array, each array element will contain the number of consecutive chars found in a given string. For example: for the given string “aaaabccaadee…
Tag: arrays
Only half of array gets raised to power
I wanted to create binary to decimal calculator. When i tried to console log both of arrays (binary is array of 0’s and 1’s, binarypos is array of numbers that are powers of 2. Screenshot Then i created simpler version, made in console so chance of making a mistake lowered to zero. But the bug app…
How can I return the mode that appeared first in an array in Javascript?
I want to create a function that will return the number with highest frequency(mode). For example: if array contains [10, 4, 5, 2, 4] the output should be 4. If there is more than one mode, I want to return the one that appeared in the array first (ie. [10,2,5, 4, 5, 2, 4] should return 2 because it appeared
How to count repeating value inside an array of object
Given the array of obj above, My goal is to get the total number of vehicle in each key. Note: if the vehicle_name is repeated it should only count as 1. Expected Output: Explanation: The count of key a => is 2 because although it have 4 vehicles but Toyota is repeated so it only count as 1. Same goes
How to group according to date{ the key in each object is the day – from the first day of the month untill the current date}
Given the array above, my goal is to return an array of object that are group according to date(On Rent). But first I need to get the start of the month (for example this month is september, and also the current date of this month so for example Sept 25) so my final output should be like this Also I
How do I use $addToSet with objects in mongodb?
I want to push only unique objects into an array with $addToSet. My userSchema has a field bankDetails which should take an array of objects: I am updating the schema using the following controller function: The data is saving correctly but Mongo auto generates an _id field every time so technically none of t…
How to enumare objects and total of them with the same key with another object in array js
I’m populing a pdf template with an array of employees, and now I need to count the number of employees working in a same department, I found a way to count the total of concurrences but I can’t enumarate the employee working in the department and the total of them. Can you help me? Thanks!!! For …
New Set Array returing Wrong data
I am trying to get distinct coaGrpId from ldgrwisesum useState but getting null values in array object and length as 310 which is my requires array object. below is the ldgrwisesum useState from where i stored the data i am expecting o/p in variable b .Below is the Expected output I have getting 310 times nul…
Javascript compare two tables
I need help with comparing two tables that presents like this: I need to check if the table A contains numbers from table B and to put it in another array: Expected output: Tried a few things but nothing works out for me. The table.includes method gives me following output }); // That is the output of above i…
Is there a way to use “indirect addressing” for JavaScript arrays?
I have a 2d JavaScript array like this: where products is an object with elements {“itemid”:”na”, “books”:10, “dvds”:15, “cds”:4} I need to be able to set the itemid with something like and then be able to read the value of the books element with som…