Imagine having these two arrays:
var a = [126, 619, 4192, 753, 901];
var b = [413, 628, 131, 3563, 19];
Is there a way to identify elements in both arrays that are close to each other by a certain percentage? Let's say we have the following function,
function findCloseElements(array1, array2, percentage)
where
findCloseElements(a, b, 5);
would result in
[126, 131], [619, 628]
In order to compare elements between two arrays, you will need to iterate through each element of array1 and check it against every element in array2. This process can be efficiently achieved using nested loops. The following code provides a potential solution:
function compareArrays(array1, array2, threshold) {
var result = [];
threshold /= 100;
array1.forEach(function(itemA){
var maxDifference = itemA * threshold;
array2.forEach(function(itemB){
if(Math.abs(itemA - itemB) < maxDifference) {
result.push([itemA, itemB]);
}
});
});
return result;
}
To find the intersections of two arrays, iterate through each item in both arrays and check if the second array item is within 1 ± the desired factor multiplied by the first array item.
function* findIntersections(arr1, arr2, factor=0) {
factor /= 100;
for(let item1 of arr1)
for(let item2 of arr2)
if(item2 <= item1*(1+factor) && item2 >= item1*(1-factor))
yield [item1, item2];
}
var arr1 = [126, 619, 4192, 753, 901];
var arr2 = [413, 628, 131, 3563, 19];
console.log(...findIntersections(arr1, arr2, 5));Below is a custom jQuery script I put together: $(function(){ $("a img").click(function() { $("<div id=\"overlay\"></div>").hide().prependTo("body").fadeIn(100); $("body").css({ ...
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