Finding the number of inversions Recall the problem of finding the number of inversions. As in the course, we are given a sequence of n numbers a 1 ,··· ,a n , which we assume are all distinct, and we difine an i...
leetcode 200:Number of Islands 思路:深度优先搜索,两层循环遍历一遍grid,若该网格为1则进行深度优先搜索并将走过的结点的visit置1,记录连接分量的个数。 ...Finding the number of inversions Recall the problem of finding the number of inversions. As in the course, we are given a sequence of n ...
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package leetcode import "math/bits" func countPrimeSetBits(L int, R int) int { counter := 0 for i := L; i <= R; i++ { if isPrime(bits.OnesCount(uint(i))) { counter++ } } return counter } func isPrime(x int) bool { return x == 2 || x == 3 || x == 5 ...
简单题。先扫描一遍找到最大值和下标。再扫描一遍检查最大值是否是其他数字的两倍。 代码# Go packageleetcodefuncdominantIndex(nums[]int)int{maxNum,flag,index:=0,false,0fori,v:=rangenums{ifv>maxNum{maxNum=v index=i}}for_,v:=rangenums{ifv!=maxNum&&2*v>maxNum{flag=true}}ifflag{return-...
Recall the problem of finding the number of inversions. As in the course, we are given a sequence of n numbers a 1 ,··· ,a n , which we assume are all distinct, and we difine an i... LeetCode - Find the Duplicate Number ...