Revert "Merge branch 'youngyangyang04:master' into master"

This reverts commit 33be177e63bc622c4e1e67d9e268bc13d4d5ba54, reversing
changes made to 559f03c92869ca55ae929d66de872f5ddda70567.

problems/0332.重新安排行程.md

@@ -342,64 +342,6 @@ class Solution:
         return path
 ```
 
-### Go
-```go
-type pair struct {
-	target  string
-	visited bool
-}
-type pairs []*pair
-
-func (p pairs) Len() int {
-	return len(p)
-}
-func (p pairs) Swap(i, j int) {
-	p[i], p[j] = p[j], p[i]
-}
-func (p pairs) Less(i, j int) bool {
-	return p[i].target < p[j].target
-}
-
-func findItinerary(tickets [][]string) []string {
-	result := []string{}
-	// map[出发机场] pair{目的地,是否被访问过}
-	targets := make(map[string]pairs)
-	for _, ticket := range tickets {
-		if targets[ticket[0]] == nil {
-			targets[ticket[0]] = make(pairs, 0)
-		}
-		targets[ticket[0]] = append(targets[ticket[0]], &pair{target: ticket[1], visited: false})
-	}
-	for k, _ := range targets {
-		sort.Sort(targets[k])
-	}
-	result = append(result, "JFK")
-	var backtracking func() bool
-	backtracking = func() bool {
-		if len(tickets)+1 == len(result) {
-			return true
-		}
-		// 取出起飞航班对应的目的地
-		for _, pair := range targets[result[len(result)-1]] {
-			if pair.visited == false {
-				result = append(result, pair.target)
-				pair.visited = true
-				if backtracking() {
-					return true
-				}
-				result = result[:len(result)-1]
-				pair.visited = false
-			}
-		}
-		return false
-	}
-
-	backtracking()
-
-	return result
-}
-```
-
 ### C语言 
 
 ```C