摘要： http://www.geeksforgeeks.org/find-whether-an-array-is-subset-of-another-array-set-1/Given two arrays: arr1[0..m-1] and arr2[0..n-1]. Find whether arr2[] is a subset of arr1[] or not. Both the arrays are not in sorted order.Examples:Input: arr1[] = {11, 1, 13, 21, 3, 7}, arr2[] = {11, 3, 7, 1}Output: 阅读全文