Array to String

Convert an array to string.

Sample Code:

function arrToStr(arr) {
// Enter your logic here...
}

Examples:

Input: [1,2,3]
Output: '1,2,3'
Explanation: The array has become a string without the square brackets.

Input: ['Java','Javascript']
Output: 'Java,Javascript'
Explanation: The array has become a string without the square brackets.