Find if complement exists
1234567891011121314151617181920212223
let target = 12;
let arr1 = [1, 2, 4, 7, 9];
let arr2 = [3, 5, 6, 7];
const complements = new Set();
for (let i = 0; i < arr1.length; i++) {
let diff = target - arr1[i];
if (!complements.has(diff)) {
complements.add(diff);
}
}
for (let i = 0; i < arr2.length; i++) {
if (complements.has(arr2[i])) {
console.log("Found complement: " + arr2[i]);
break;
}
console.log("No complements found");
}
console.log(arr1);
console.log(complements);
JavaScript
INFO