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Cómo contar elementos en 2 matrices diferentes en javascript con el mismo índice

Tengo 2 matrices diferentes en javascript, siempre tienen la misma longitud y necesito contar un elemento + otro elemento de otra matriz con el mismo índice

 let arr1 = [1, 2, 3]; let arr2 = [8, 9, 2]; Expected Output 1 + 8 = 9 2 + 9 = 11 3 + 2 = 5 let result = [9, 11, 5]

¿Cuál sería la forma más fácil y elegante de hacerlo? Probé loop y map también, pero no encontré una solución que funcionara.

about 4 years ago · Santiago Gelvez
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puede lograr esto con solo 1 map

 let arr1 = [1, 2, 3]; let arr2 = [8, 9, 2]; const sums = arr1.map((e,index) => e+arr2[index]) console.log(sums)

o un bucle for simple

 let arr1 = [1, 2, 3]; let arr2 = [8, 9, 2]; const sums = [] for(let i=0; i<arr1.length; i++){ sums.push(arr1[i]+arr2[i]) } console.log(sums)

o con un forEach

 let arr1 = [1, 2, 3]; let arr2 = [8, 9, 2]; const sums = [] arr1.forEach((e,index) => { sums.push(e+arr2[index]) }) console.log(sums)

o con reduce

 let arr1 = [1, 2, 3]; let arr2 = [8, 9, 2]; const sums = arr1.reduce((acc,curr,index) => { acc.push(curr+arr2[index]) return acc },[]) console.log(sums)

about 4 years ago · Santiago Gelvez Report
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