answer:Soccer (or football).

answer:| Column 1 | Column 2 | Column 3 | | --- | --- | --- | | Row 1, Column 1 | Row 1, Column 2 | Row 1, Column 3 | | Row 2, Column 1 | Row 2, Column 2 | Row 2, Column 3 |

answer:There are many languages spoken in the United States, but the most commonly spoken language is English. Spanish is the second most commonly spoken language due to the large Hispanic population. Other languages spoken in the United States include Chinese, French, German, Tagalog, and Vietnamese, among many others. The languages spoken in the United States vary widely in their origins, grammar, vocabulary, and pronunciation. Many languages are spoken as a result of immigration and cultural diversity in the United States. Despite the diversity of languages spoken, English remains the dominant language of business, education, and government.

answer:Quicksort is a divide-and-conquer algorithm that sorts an array by partitioning it into two subarrays based on a pivot element. The basic steps in its implementation are: 1. Choose a pivot element from the array. 2. Partition the array into two subarrays: one with elements smaller than the pivot and one with elements larger than the pivot. 3. Recursively apply the steps above to the subarrays until the base case is reached (subarrays with only one element). 4. Concatenate the sorted subarrays to obtain the final sorted array. The pivot element can be chosen in different ways, but a common approach is to select the middle element of the array. The partitioning process involves iterating through the array and swapping pairs of elements to ensure that all elements smaller than the pivot are on the left side and all elements larger than the pivot are on the right side. This can be done efficiently using two pointers that move towards each other from opposite ends of the array. Quicksort has an average-case time complexity of O(n log n), but its worst-case time complexity is O(n^2) if the pivot element is consistently chosen poorly (e.g. always the first or last element). However, with proper pivot selection and techniques such as median-of-three partitioning, the worst-case scenario is greatly minimized.