index of two sum
//two sum :
//Input: nums = [2,7,11,15], target = 9
//Output: [0,1]
//Explanation: Because nums[0] + nums[1] == 9, we return [0, 1].
var twoSum = function (nums, target) {
for (let index in nums) {
const remaining = target - nums[index]
const output = nums
output.splice(index, 1,null)
if (output.includes(remaining)) {
return [nums.indexOf(remaining), index]
}
}
}
var twoSum = function(nums, target) {
let obj = {}
for(let i = 0; i < nums.length; i++) {
if (obj.hasOwnProperty(target-nums[i])) {
return [obj[target-nums[i]], i]
}
obj[nums[i]] = i
}
};