Randomize array with guaranteed unique in possibly linear time

gistfile1.txt

//version that only works for arrays of nums in JS
var array = [0,1,2,3,4,5,6,7,8,9]
var r, i = array.length
console.log(array)
while (i --> 1) {
        r = Math.floor(Math.random()*i);
        if(array[r] !== array[i]){
                array[r] = array[r] ^ array[i];
                array[i] = array[r] ^ array[i];
                array[r] = array[r] ^ array[i];
        }
}

console.log(array);

//version that works on any object
var a = [{p:1},{p:2},{p:3},{p:4}];
const swap = (i,r) => {
        const t = a[i];
        a[i] = a[r];
        a[r] = t;
}
i = a.length
while(i --> 1){
        r = Math.floor(Math.random()*i);
        swap(i,r);
}

console.log(a);

//((i) => {while(i --> 1)swap(i, Math.floor(Math.random() * i))})(a.length)
////////////////////////////////////////////////
const shuffle = a => {
        const loop = (i) => {
                if(i>1){
                        swap(i -1, rand(i));
                        loop(i -1);
                }
        }
        const swap = (i,r) => {
                const t = a[i];
                a[i] = a[r];
                a[r] = t;
        }
        const rand = i => Math.floor(Math.random() * i);
        loop(a.length);
}
shuffle(a)