go数组中两数相加等于某个数
2022/3/5 23:15:28
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package main import ( "fmt" "math/rand" "time" ) func sumArray(a [10]int) int { var sum int = 0 for i := 0; i < len(a); i++ { sum = sum + a[i] } fmt.Println(sum) return sum // for _,val ;=range a{ // sum=sum+val // } } func testArraySum() { // 产生随机化的种子 rand.Seed(time.Now().Unix()) var b [10]int for i := 0; i < len(b); i++ { b[i] = rand.Intn(100) // 产生0到100的随机数 } fmt.Printf("b=%v\n", b) sum := sumArray(b) fmt.Printf("sum=%d\n", sum) } func twoSum(a [5]int, target int) { for i := 0; i < len(a); i++ { other := target - a[i] for j := i + 1; j < len(a); j++ { if a[j] == other { fmt.Printf("%d,%d\n", i, j) } } } } func testTwoSum() { // var b [5]int = [5]int{1, 3, 5, 8, 7, 4} // 只能少不能多array index 5 out of bounds [0:5] var b [5]int = [5]int{1, 3, 5, 8, 7} // // b := [5]int{1,3,5,8,7} // b := [...]int{1, 3, 5, 8, 7, 9} fmt.Printf("这是b:%v\n", b) twoSum(b, 8) } func main() { // testArraySum() testTwoSum() }
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