96 lines
1.7 KiB
Go
96 lines
1.7 KiB
Go
package main
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import "fmt"
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func main() {
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fmt.Println(findAnagrams("cbaebabacd", "abc"))
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}
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func findAnagrams(s string, p string) []int {
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length := len(p)
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if length > len(s) {
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return []int{}
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}
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nums := [26]int{}
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nownum := [26]int{}
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result := []int{}
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for _, ch := range p {
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nums[ch-'a']++
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}
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for i := 0; i < len(s)-length+1; i++ {
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if i == 0 {
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for i := 0; i < length; i++ {
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nownum[s[i]-'a']++
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}
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if nums == nownum {
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result = append(result, i)
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}
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continue
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}
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nownum[s[i-1]-'a']--
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nownum[s[i+length-1]-'a']++
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if nums == nownum {
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result = append(result, i)
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}
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}
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return result
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}
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//func findAnagrams(s string, p string) []int {
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// result := make([]int, 0)
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// if len(s) < len(p) {
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// return result
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// }
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// windowlength := len(p)
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// hashmap := make(map[string]int)
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// keynum := 0
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// for i := range p {
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// if _, ok := hashmap[string(p[i])]; ok {
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// hashmap[string(p[i])] += 1
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// } else {
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// keynum++
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// hashmap[string(p[i])] = 1
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// }
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// }
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// //fmt.Println(hashmap)
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// for slow := 0; slow < len(s); slow++ {
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// fasttmp := slow
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// hashtemp := make(map[string]int)
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// if len(s)-fasttmp < windowlength {
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// break
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// }
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// for fast := slow; fast < windowlength+slow; fast++ {
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// if _, ok := hashmap[string(s[fast])]; ok {
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// hashtemp[string(s[fast])] += 1
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// } else {
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// break
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// }
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// if fast == windowlength+slow-1 {
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// va := 0
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// for k, v := range hashtemp {
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// if hashmap[k] != v {
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// //fmt.Println("退出")
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// break
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// } else {
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// va++
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// }
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// }
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// //fmt.Println("当前va:", va)
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// if va == keynum {
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// result = append(result, slow)
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// }
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// }
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// }
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// //fmt.Println("hashtemp", hashtemp)
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// }
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// fmt.Println(result)
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// return result
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//}
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