I have a series of values in an array that I need to go through and assign incremental numerical values, starting from 1. If the same value appears more than once in the array, I want to append the original assigned number with the letter A, and then B, accordingly. For example:
myArray=[12,15,6,9,11,14,25,6,13,17,6]
The desired output would be as follows >>
1
2
3
4
5
6
7
3A
8
9
3B
To accomplish this task, utilize a dictionary data structure.
Maintain a count variable to track the number of distinct characters visited and create a dictionary where the key represents the actual number while the value is a tuple comprising the assigned number and the count for that specific key thus far.
For more effective assistance, consider sharing your custom implementation if possible.
To implement this solution, you can utilize two maps: one to track the index of the first occurrence of an element and another to keep count of how many times the element has appeared previously:
const assignCharacters = array => {
let resultArray = new Array(array.length);
let firstOccurrenceIndexMap = {};
let occurrenceCountMap = {};
let runningIndex = 1;
array.forEach((element, index) => {
if (firstOccurrenceIndexMap[element]) {
const char = String.fromCharCode('A'.charCodeAt(0) + occurrenceCountMap[element] - 1);
resultArray[index] = firstOccurrenceIndexMap[element] + char;
} else {
firstOccurrenceIndexMap[element] = runningIndex++;
resultArray[index] = firstOccurrenceIndexMap[element];
}
occurrenceCountMap[element] = (occurrenceCountMap[element] || 0) + 1;
});
return resultArray;
}
const inputArray = [12, 15, 6, 9, 11, 14, 25, 6, 13, 17, 6];
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