JavaScript/lec7.html at main · Anuradha0066/JavaScript · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>

// 2D array
let arr=[[1,2,3,4,5],[6,7,8,9,0],[1]]
console.log(arr.length);//3
console.log(arr[1][0]);

// for(let i=0;i<arr.length;i++){
//     for(let j=0;j<arr[i].length;j++){
//         console.log(arr[i][j]);

//  }
// }

// let a=-Infinity;
// for(let i=0;i<arr.length;i++){
//     for(let j=0;j<arr[i].length;j++){
//        if(arr[i][j]>a){
//        a= arr[i][j];
//        }
//         }
//  }
// console.log(a)

// let data=arr.map((a,b,c)=>a.map((res)=>{return res*2}))
//    console.log(arr[i]);

//  let maxValue=arr.reduce((a,b)=>{
//     return a>b?a:b
//  })

// let sum=0;
// for (let i=0;i<arr.length;i++){
//     for(let j=0;j<arr[i].length;j++){
//         sum=sum+arr[i][j];
//     }
// }
// console.log(sum);


// sum of 2D
let totalSum=arr.reduce((sum,b)=>{
    return sum+b.reduce((val,res)=>{return val+res},0)

},0)
 console.log(totalSum);


 //sum of 1D
 let arr1=[1,2,3]
 let data=arr1.reduce((a,b)=>{
    return a+b
 },0)
 console.log(data);


 a=arr.flat()
 console.log(arr.flat());
 let data1=a.reduce((a,b)=>{
    return a>b?a:b
 },0)
 console.log(data1);


    </script>
</body>
</html>