Problem
Given an array and a target number, find the indices of the two values from the array that sum up to the given target number.
Example
{
"numbers": [5, 3, 10, 45, 1],
"target": 6
}
{
"numbers": [4, 1, 5, 0, -1],
"target": 10
}
Output:
[1, 3] or [-1, -1]
Solution
function two_sum(numbers, target) {
for (let i = 0; i < numbers.length; i++) {
for (let j = i + 1; j < numbers.length; j++) {
if (numbers[i] + numbers[j] === target) {
return [i, j];
}
}
}
return [-1, -1]
}
Tech Corner 