逆置/反转单链表(C语言)
1、逆置鏈表:前插法
void ReverseList(PSListNode* pHead) {if (NULL == *pHead){return;}else{//創(chuàng)建一個(gè)新的空鏈表,遍歷pHead指向的鏈表里的所有節(jié)點(diǎn),每找到一個(gè),就前插到新鏈表里PSListNode pNewHead = *pHead;*pHead = (*pHead)->pNextNode;//第一次前插到新鏈表里的結(jié)點(diǎn),是新鏈表的尾節(jié)點(diǎn),所以要使它的下一個(gè)結(jié)點(diǎn)為空pNewHead->pNextNode = NULL;while (NULL != *pHead){PSListNode pNode = *pHead;*pHead = (*pHead)->pNextNode;pNode->pNextNode = pNewHead;pNewHead = pNode;}*pHead = pNewHead;} }2、逆置鏈表:三指針?lè)?/p> void ReverseList(PSListNode* pHead) {assert(pHead);if ((*pHead == NULL) || ((*pHead)->pNextNode) == NULL){return;}else{PSListNode pPreNode = *pHead;PSListNode pCurNode = (*pHead)->pNextNode;PSListNode pOffNode = (*pHead)->pNextNode->pNextNode;PSListNode pNode = NULL;while (1){pCurNode->pNextNode = pPreNode;pPreNode->pNextNode = pNode;pNode = pPreNode;if (pOffNode == NULL){break;}else{pPreNode = pCurNode;pCurNode = pOffNode;pOffNode = pOffNode->pNextNode;}}*pHead = pCurNode;} } 創(chuàng)作挑戰(zhàn)賽新人創(chuàng)作獎(jiǎng)勵(lì)來(lái)咯,堅(jiān)持創(chuàng)作打卡瓜分現(xiàn)金大獎(jiǎng)
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