arraymethods.js

let arr=["one",2,"three",4,"five"]// index starts from 0

console.log(arr[4]);
arr[3]="four";
console.log(arr);

let fruit=["apple","orange","banana","kiwi","guva"]
fruit.push("grape"); // inserrt elemet last
console.log(fruit);
fruit.pop(); // remove
console.log(fruit);
fruit.shift(); // inserrt elemet first
console.log(fruit);
fruit.unshift("plum"); // inserrt elemet 
console.log(fruit);

// slice
console.log(fruit.slice(2,4));// slice add next value index
console.log(fruit.slice(-3,-1));  // negative 

//splice
fruit.splice(2,0,"cherry"); // add
console.log(fruit);
fruit.splice(3,1,"tomato"); // update
console.log(fruit);
fruit.splice(4,1,); // remove
console.log(fruit);

// sort reverse
//let fruit=["apple","orange","banana","kiwi","guva"]
console.log(fruit.reverse());// reverse order

console.log(fruit.sort()); //alphabetical order
console.log(fruit.reverse());

//concat index

let fruits=["apple","pomo","banana"]
let one =[1,1,2,3,4,5,1,2]
console.log(one.indexOf(1));  // 1 start index 0 1 end index 6
console.log(one.lastIndexOf(1));

console.log(fruits.concat(one));// combine 2 string

// array method

// map method first get the value check the condition and store it in new array

let num=[1,2,3,4,5,6,7,8,9,10]  // iterated through each value
 
let mul=num.map((el)=>el*5)

    console.log(mul);
    


// filter method store new value in new array based on filter of condition
let num1=[1,2,3,4,5,6,7,8,9,10]
let even=num1.filter((el)=>el%2 ===0)
console.log(even);


// find the largest value in array

let num3=[1,2,4,5,78,97]

for(let i=0;i<num3.length;i++)

{

}

let num2=[1,2,3,4,7,10,25,32,56,78,12,75,45]
let divisablebytwoandfive=num2.filter((el)=> el%2===0 &&el%5===0)
console.log(divisablebytwoandfive);




// reduce method  it give single output 

let sum=num.reduce((acc,el)=>acc+el,10) // 10 save in accumulator
console.log(sum);


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