题解 | #合并表记录#
合并表记录
https://www.nowcoder.com/practice/de044e89123f4a7482bd2b214a685201
package main
import (
"fmt"
"sort"
)
func calculateSum(nums [][2]int) {
m := make(map[int]int, 0)
for _, pair := range nums {
m[pair[0]] += pair[1]
}
var keyList []int
for key, _ := range m {
keyList = append(keyList, key)
}
sort.Ints(keyList)
for _, key := range keyList {
fmt.Printf("%d %d\n", key, m[key])
}
}
func main() {
var N int
var nums [][2]int
fmt.Scan(&N)
for i:=0; i<N; i++ {
var a, b int
fmt.Scan(&a, &b)
nums = append(nums, [2]int{a, b})
}
calculateSum(nums)
}
// 本题输入为数字，所以采用 fmt.Scan(&a, &b) 的方式接受输入
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