array_map_01.sol

pragma solidity ^0.5.3;

contract{
    uint[] myArray;
    
    function manipulateArray() external {
        myArray.push(1);     // add an element to the array
        myArray.push(3);     // add another element to the array
        
        myArray[0];          // get the element at key 0 or first element in the array  
        myArray[0] = 20;     // update the first element in the array
        
      
        //we can also get the element in the array using the for loop
        for (uint j = 0; j < myArray.length; j++) {
            myArray[j];
        }
    }
    
}