09 2022 档案
摘要:class MyLinkedList { int size=0; class Node{ int val; Node next; Node prev; Node(int val,Node next,Node prev){ this.val=val; this.next=next; this.prev
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摘要://1 class Solution { int cnt=0; public boolean canFormArray(int[] arr, int[][] pieces) { return dfs(0,arr,pieces); } boolean dfs(int idx,int[] arr,int
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