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function code_test() {
var arr1 = "john".split('');
var arr2 = arr1.reverse();
var arr3 = "jones".split('');
arr2.push(arr3);
console.log("array 1: length", arr1.length + "last=", arr1.slice(-1));
console.log("array 2: length", arr2.length + "last=", arr2.slice(-1));
}
code_test();