function reverseAString(str) {
    //  write code here.

    let stringArray = [];
    let reversedArray = [];
    let reversedString = "";
    
    for( let i = 0; i < str.length; i++ ) {
        stringArray.push( str.charAt(i) );
    }
    
    for( let i = str.length - 1; i >= 0; i-- ) {
        reversedArray.push(stringArray[i])
    }
    
    for( char of reversedArray ){
        reversedString = reversedString + char    
    }
        
    
    return reversedString
}



/**
* Test Suite 
*/
describe('reverseAString()', () => {
    it('returns original string reversed', () => {
        // arrange
        const str = 'hello';
        
        // act
        const result = reverseAString(str);

        // log
        console.log("result: ", result);
        
        // assert
        expect(result).toBe('olleh');
    });
});