leetcode:Reverse Integer 及Palindrome Number Reverse IntegerReverse digits of an integer.Example1: x = 123, return 321Example2: x = -123, return -321click to show spoilers.Have you thought about this?Here are some good questions to ask before coding. Bonus points for you if you have ...
Given an array nums, we call (i, j) an important reverse pair if i < j and nums[i] > 2*nums[j]. You need to return the number of important reverse pairs in the given array. Example1: Input: [1,3,2,3,1] Output: 2 Example2: Input: [2,4,3,5,1] Output: 3 Note: The ...
public int reverse(int x) { int ret=0; while(x!=0) { int t=x%10; ret=ret*10+t; x=x/10; } return ret; } } publicclassSolution {publicbooleanisPalindrome(intx) {if(x<0)returnfalse;if(x==0)returntrue;intret=0;intxold=x;while(x!=0) {inttemp= x%10;//zui hou yi wei...
Did you notice that the reversed integer might overflow? Assume the input is a 32-bit integer, then the reverse of 1000000003 overflows. How should you handle such cases? For the purpose of this problem, assume that your function returns 0 when the reversed integer overflows. 分析:就是从后...
Before my AC, I got two WA because of I didn't take the range of Integer into consideration. So, I add the 'if' to judge whether the reversed number is beyond the range of 'Integer'. !But, one point that really makes me confused is that why the top solution didn't face the pro...
the sign the number at each bit in decimal base if the reversed integer overflows For [1]: We can turn all negative numbers to their opposite, or equivalently take their absolute values. Recover the sign when the result is returned. However, here exists a corner case:x == -2147483648sinc...
Original file line numberDiff line numberDiff line change @@ -128,6 +128,7 @@ My accepted leetcode solutions to some of the common interview problems. ### [Divide and Conquer](problems/src/divide_and_conquer) - [Kth Largest Element In a Array](problems/src/divide_and_conquer/KthLargest...
package leetcode import "strings" func reverseWords151(s string) string { ss := strings.Fields(s) reverse151(&ss, 0, len(ss)-1) return strings.Join(ss, " ") } func reverse151(m *[]string, i int, j int) { for i <= j { (*m)[i], (*m)[j] = (*m)[j], (*m)[i]...
LeetCode problem solving notes. Define a function, input the head node of a linked list, reverse the linked list and output the head node of the reversed linked list.
The number of nodes in the list is n. 1 <= n <= 500 -500 <= Node.val <= 500 1 <= left <= right <= n Follow up: Could you do it in one pass? 解题思路 对于链表反转相信大家都不陌生,这道题是链表反转的升级版,不是反转整个链表,而是反转指定的两个结点之间的链表(包含指定的这两...