1752     let arrayWithUndefined = ["a", "b", undefined, "d"];  variable
1753     arrayWithUndefined.reverse();
1754     print(arrayWithUndefined);
1778     let arrayWithUndefined = ["a", undefined, "b", "c"];  variable
1779     let shiftedElement4 = arrayWithUndefined.shift();
1781     print(arrayWithUndefined);
1802     let arrayWithUndefined = ["a", undefined, "b", "c"];  variable
1803     let slicedArrayWithUndefined = arrayWithUndefined.slice(1, 3);
1829     let arrayWithUndefined = [1, undefined, 3, 5];  variable
1830     let isSomeUndefined = arrayWithUndefined.some(num => num === undefined);
1852     let arrayWithUndefined = [1, undefined, 3, 5];  variable
1853     arrayWithUndefined.sort();
1854     print(arrayWithUndefined);
1882     let arrayWithUndefined = [1, undefined, 3, 5];  variable
1883     let removedElements4 = arrayWithUndefined.splice(1, 2);
1885     print(arrayWithUndefined);
1928     let arrayWithUndefined = [1, 2, undefined];  variable
1929     let newLength4 = arrayWithUndefined.unshift("x");
1931     print(arrayWithUndefined);
1949     let arrayWithUndefined = ["a", "b", undefined, "d"];  variable
1950     print(arrayWithUndefined.toReversed());
1963     let arrayWithUndefined = [1, undefined, 3, 5];  variable
1964     print(arrayWithUndefined.toSorted());
1986     let arrayWithUndefined = [1, undefined, 3, 5];  variable
1987     let removedElements4 = arrayWithUndefined.toSpliced(1, 2);
1989     print(arrayWithUndefined);