Question

How to move all negative elements to the end of array in Node.js

Answer 1

class MyArray {
    move_negative_to_end(arr) { 
        const size = arr.length;
        let temp = [];
       
        let j = 0; 
        for (let i = 0; i < size ; i++) 
            if (arr[i] >= 0 ) 
                temp[j++] = arr[i]; 
         
        if (j == size || j == 0) 
            return; 
         
        for (let i = 0 ; i < size ; i++) 
            if (arr[i] < 0) 
                temp[j++] = arr[i]; 
       
        for (let i = 0; i < size; i++) 
           arr[i] = temp[i];
    } 
}
 
function main()
{
    var obj = new MyArray();
 
    const arr = [-1, 8, -21, -3, -2, 7, 15, -30, -40, 4, 6, 9];
     
    obj.move_negative_to_end(arr); 
   
    console.log(arr);
}
 
main();
 
 
  
  
  
  
/*
run:
  
[8, 7, 15, 4, 6, 9, -1, -21, -3, -2, -30, -40]
 
*/

 

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Answer 2

class MyArray {
    move_negative_to_end(arr) { 
        const size = arr.length;
     
        let j = 0;
        for (let i = 0; i < size; i++) {
            if (arr[i] >= 0) {
               let tmp = arr[i];
               arr[i] = arr[j];
               arr[j] = tmp;
               j++;
            }
        }
    }
}

function main()
{
    var obj = new MyArray();

    const arr = [-1, 8, -21, -3, -2, 7, 15, -30, -40, 4, 6, 9];
    
    obj.move_negative_to_end(arr); 
  
    console.log(arr);
}

main();


 
 
 
 
/*
run:
 
[8, 7, 15, 4, 6, 9, -21, -30, -40, -3, -2, -1]

*/

 

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