1
2//For Values
3var arr =[1,10,3]
4var min = Math.min.apply(null, arr),
5    max = Math.max.apply(null, arr);
6
7//For Objects
8var arr = [{a: 1},{a: 10},{a: 3}]
9var values = arr.map(val => val.a);
10var max = Math.max.apply(null, values);
11console.log(max)
12

1var peopleData = [ 
2    { name: "Paul", height: 180, age: 21 },
3    { name: "Johnny", height: 198, age: 43 },
4    { name: "Brad", height: 172, age: 49 },
5    { name: "Dwayne", height: 166, age: 15 }
6];
7
8//Find biggest height number
9var maxHeight = 0;
10
11for (var i = 0; i < heights.length; i++) {
12    if (peopleData[i].height > maxHeight) {
13        maxHeight = peopleData[i].height;
14      //if you console.log(maxHeight); you should get 198
15    }
16}

1const array1 = [1, 3, 2];
2
3Math.max(...array1);
4// expected output: 3

1const max = arr => Math.max(...arr);

1function findHighestNumber(nums) {
2	
3	let inputs = nums.filter((val, i) => nums.indexOf(val) === i)
4	let max = Math.max(...nums);
5	let min = Math.min(...nums);
6  
7   return max + (-min);
8}
9
10console.log(difference([1, 7, 18, -1, -2, 9]));

1function findHigestNumber(nums) {
2	
3	let inputs = nums.filter((val, i) => nums.indexOf(val) === i)
4	let max = inputs.length - 1;
5	let min = 0;
6
7	for(let i = 0; i < inputs.length; i++) {
8      
9      if(inputs[i] > max) max = inputs[i];
10      if(inputs[i] < min) min = inputs[i];
11	}
12  
13   return max + (-min);
14}
15
16console.log(difference([1, 7, 18, -1, -2, 9]));