Reorder an array according to given indexes
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// https://www.geeksforgeeks.org/reorder-a-array-according-to-given-indexes/
// Given two integer arrays of same size, “arr[]” and “index[]”, reorder elements in “arr[]”
// according to given index array. It is not allowed to given array arr’s length.
const reorder = (arr, indices) => {
if (arr.length !== indices.length) {
return arr;
}
const tempList = new Array(arr.length);
for (let i = 0; i < arr.length; i++) {
tempList[indices[i]] = arr[i];
}
for (let i = 0; i < tempList.length; i++) {
arr[i] = tempList[i];
}
};
var arr = ["a", "b", "c", "d", "e", "f"];
var indices = [2, 3, 4, 0, 5, 1];
reorder(arr, indices);
console.log(arr);
// logs: ["d", "f", "a", "b", "c", "e"]
TypeScript
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