function solution(s) {
s=s.split(' ');
for (let i=0; i<s.length; i++) {
s[i]=s[i].split('');
for (let j=0; j<s[i].length; j++) {
if (j%2==0) {
s[i][j]=s[i][j].toUpperCase()
}
else {
s[i][j]=s[i][j].toLowerCase()
}
}
s[i]=s[i].join('');
}
return s.join(' ');
}
console.log(solution("try hello world"));
O(n) !?
function solution(s) {
let result = '';
let num = 0;
for (let i=0; i<s.length; i++) {
if (s.charAt(i) === ' ') {
num = 0;
result += ' ';
continue;
}
else if (num%2===0) {
result += (s.charAt(i).toUpperCase());
num++;
}
else {
result += (s.charAt(i).toLowerCase());
num++;
}
}
return result;
}
console.log(solution("try hello world"));