waruzhi

摘要： The set[1,2,3,…,n]contains a total ofn! unique permutations.By listing and labeling all of the permutations in order,We get the following sequence (ie, forn= 3):"123""132""213""231""312""321"Givennandk, return thekthpermutation sequence.Not 阅读全文

摘要： Sort a linked list using insertion sort.代码： 1 ListNode *insertionSortList(ListNode *head) { 2 // IMPORTANT: Please reset any member data you declared, as 3 // the same Solution instance will be reused for each test case. 4 if(!head) 5 return NULL; 6 Li... 阅读全文