我想使用 hash 字符 javascript 打印一个正方形

Question

I am trying to print a square using the hash character

 function square(num){
    for(i = 0; i < num; i++){
        for(j = 0; j < num; j++){
            console.log("#");
        }
        console.log(" ");
    }
    }square(2);

/* my output is: "#" "#"

"#" "#"

instead of: "##" "##" */

Answer 1

Every time you console.log() , the console will print a new line. You need to add each row to one line like this:

 function square(num){ for(i = 0; i < num; i++){ let row = '' for(j = 0; j < num; j++){ row+='#' } console.log(row+" "); } } square(4);

Answer 2

Creating a function named square to return a square pattern.Using squareArray as the solution array and result string to store the value for each inner loop.Finally, using join to convert array to string.

 function square(num) { const squareArray = []; let result; for (let i = 0; i < num; i++) { result = ""; for (let j = 0; j < num; j++) { result += "#"; } squareArray.push(result); } return squareArray.join("\n"); } console.log(square(2)); console.log(square(4)); console.log(square(6));