function sum(num) {
let qqq = 0;
for (let i = 1; i <= num; i++) {
qqq = qqq + i;
}
console.log(qqq);
}
function sum(num) {
let count = 0;
// i = i + 1
for( let i = 1; i <= num; i++ ) {
// count = count + i;
count += i;
}
return count;
}
function countLetter(str) {
let count = 0;
str = str.toLowerCase();
for (let i = 0; i < str.length; i++) {
if (str[i] === "a") {
count = count + 1;
}
}
console.log(count);
}
function countLetter(str) {
let count = 0;
for( let i = 0; i < str.length; i++) {
if( str[i] === 'a' || str[i] === 'A' ) {
count = count + 1;
}
}
}
function makeNumber(num) {
let qqq = "1";
for (let i = 2; i <= num; i++) {
qqq = qqq + "-" + i;
}
console.log(qqq);
}
function makeNumber(num) {
let str = "";
for( let i = 1; i <= num; i++ ) {
str += i // str = str + i;
if( i !== num ) {
str += "-" // str = str + "-"
}
}
}
function makeOdd(num) {
let str = "";
for (let i = 0; i <= num; i++) {
if (i % 2 !== 0) {
str = str + i;
} else if (i % 2 === 0) {
continue;
}
}
console.log(str);
}
function makeOdd(num) {
let str = '';
for( let i = 1; i <= num; i++ ) {
if( i % 2 === 1 ) {
str += i; // str = str + i;
}
}
}
출처: 코드캠프