Mummbling

function accum(s){ result="" for(let i=0;i<s.length;i++){ for(let j=0;j<i+1;j++){ if(j==0){result=result+s.charAt(i).toUpperCase()} else{result=result+s.charAt(i).toLowerCase()} } if (i==s.length-1){break;} result=result+"-" }

console.log(result); return result; } accum('rtnrthFT')