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摘要： /** * Definition for a binary tree node. * struct TreeNode { * int val; * struct TreeNode *left; * struct TreeNode *right; * }; */ int min(int i,int j 阅读全文

摘要： /** * Definition for a Node. * struct Node { * int val; * int numChildren; * struct Node** children; * }; */ int maxDepth(struct Node* root) { if(!roo 阅读全文

摘要： int min; void dfs(char* s,int head,int tail, int count){ if(head>=tail){ if(count<min) min=count; return ; } if(s[head]==s[tail]){ dfs(s,head+1,tail-1 阅读全文

摘要： int visit[300][300]; void dfs(char** grid,int m,int n,int i,int j){ if(i>=m || j>=n) return; visit[i][j]=1; if( i+1<m && grid[i+1][j]=='1' && visit[i+ 阅读全文

摘要： ] 不简单的题目。 char change(int n){ if(n<=9) return n+'0'; return n-10+'a'; } void reverse(char* array,int n){ int head=0,tail=n-1; while(head<=tail){ char 阅读全文

摘要： /** * Definition for a binary tree node. * struct TreeNode { * int val; * struct TreeNode *left; * struct TreeNode *right; * }; */ /** * Return an arr 阅读全文

摘要： /** * Note: The returned array must be malloced, assume caller calls free(). */ typedef struct node{ int num; int count; }HASH; void insert(HASH* h,in 阅读全文

摘要： /** * Return an array of arrays of size *returnSize. * The sizes of the arrays are returned as *returnColumnSizes array. * Note: Both returned array a 阅读全文

摘要： void reverse(char* num1, int n){ int head=0,tail=n-1; while(head<=tail){ char c=num1[head]; num1[head]=num1[tail]; num1[tail]=c; head++; tail--; } } i 阅读全文

摘要： int f(int a ,int b,char c){ if(c=='+') return a+b; if(c=='-') return a-b; if(c=='/') return a/b; return a*b; } int evalRPN(char** tokens, int tokensSi 阅读全文