# Chiranjit Behera

# Question 1: Fint the 2nd largest number in an interger array.

// logic
let i=0,temp,arr;
function swap(){
    for(let i=0;i<arr.length;i++){
    if(arr[i]>arr[i+1]){
       temp = arr[i+1]
        arr[i+1] = arr[i]
    arr[i] = temp
   }
}
    
}

# Question 2:

const arr = [
    {age: 12, class: 5, name: 'Amit'},
    {age: 12, class: 5, name: 'Arun'},
    {age: 11, class: 6, name: 'Ashish'},
    {age: 10, class: 5, name: 'Puja'},
    {age: 11, class: 6, name: 'Sumit'},
    {age: 13, class: 6, name: 'Arjun'}
]

outputObj = {
    5: ['Amit', 'Arun', 'Puja'],
    6: ['Ashish', 'Sunmit', 'Arjun']
}


let newArr1 = arr.filter(function(el){
    return el.class==5; // syntax error.
})
let name;
for(let i=0;i<newArr1.length;i++){
    name = newArr1[i].name
    console.log(name)
}


// function 



let sum = 0, avg;
for(let i=0;i<newArr1.length;i++){ // error
    sum += newArr1[i]
    
}
 avg = sum / newArr1.length



let newArr2 = arr.filter(function(el){
    return el.class==6;
})

for(let i=0;i<newArr2.length-1;i++){
    sum += newArr2[i]
    
   
}
avg = sum / newArr2.length