var arr = [1,2,3,4];
var num = new Array();
for(var i = 0 ; i < 4; i++){
for(var j = 0; j < 4;j++){
if(arr[i]==arr[j]){
continue;
}
for(var k = 0; k < 4; k++){
if(arr[j]==arr[k]){
continue;
}
if(arr[i]==arr[k]){
continue;
}
var curnum = arr[i] * 100 + arr[j] * 10 +arr[k];
num.push(curnum);
}
}
}
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