function sort(target, type = 'bubble') {    if (!Array.isArray(target)) return target;    let len = target.length;    if (type === 'bubble') {        for (let i = len; i > 0; i--) {            for (let j = 0; j <= i; j++ ) {                let v1 = target[j];                let v2 = target[j + 1];                if (v1 > v2) {                    target[j] = v2;                    target[j + 1] = v1;                }            }        }    }    if (type === 'select') {        for (let i = 0; i < len - 1; i++) {             for (let j = i; j <= len; j++ ) {                let v1 = target[i];                let v2 = target[j + 1];                if (v1 > v2) {                    target[i] = v2;                    target[j + 1] = v1;                }            }        }    }    if (type === 'insert') {        for (let i = 1; i < len; i++) {             for (let j = i; j > 0; j-- ) {                let v1 = target[j]; // 4                let v2 = target[j - 1]; // 5                if (v1 < v2) {                    target[j] = v2;                    target[j - 1] = v1;                } else {                    break;                }            }        }    }    return target;}sort([5,4,3,2,1], 'insert');