📜  两列火车在同一方向上一起行驶的距离

📅  最后修改于: 2021-05-14 02:36:12             🧑  作者: Mango

给定两个数组A []B [] ,每个数组由N个整数组成,包含两个列车在相同时间方向上在同一时间行进的速度,任务是找到两个列车一起行进的总距离(侧并排整个过程。

例子:

方法:
请按照以下步骤解决问题:

  • 同时遍历两个数组。
  • 对于每个i索引,检查sum(A [0] .. A [i – 1])是否等于sum(B [0] .. B [i – 1])以及A [i]B [i]是否相等。
  • 如果满足以上两个条件,则将A [i]添加到答案中
  • 最后,遍历整个数组后,输出answer

下面是上述方法的实现:

C++
// C++ Program to find the distance
// traveled together by the two trains
#include 
using namespace std;
 
// Function to find the distance traveled together
int calc_distance(int A[], int B[], int n)
{
 
    // Stores distance travelled by A
    int distance_traveled_A = 0;
 
    // Stpres distance travelled by B
    int distance_traveled_B = 0;
 
    // Stores the total distance
    // travelled together
    int answer = 0;
 
    for (int i = 0; i < 5; i++) {
 
        // Sum of distance travelled
        distance_traveled_A += A[i];
        distance_traveled_B += B[i];
 
        // Condition for traveling
        // together
        if ((distance_traveled_A
             == distance_traveled_B)
            && (A[i] == B[i])) {
            answer += A[i];
        }
    }
    return answer;
}
 
// Driver Code
int main()
{
 
    int A[5] = { 1, 2, 3, 2, 4 };
    int B[5] = { 2, 1, 3, 1, 4 };
    int N = sizeof(A) / sizeof(A[0]);
 
    cout << calc_distance(A, B, N);
    return 0;
}


Java
// Java program to find the distance
// traveled together by the two trains
import java.util.*;
import java.lang.*;
 
class GFG{
     
// Function to find the distance traveled together
static int calc_distance(int A[], int B[], int n)
{
 
    // Stores distance travelled by A
    int distance_traveled_A = 0;
 
    // Stpres distance travelled by B
    int distance_traveled_B = 0;
 
    // Stores the total distance
    // travelled together
    int answer = 0;
 
    for(int i = 0; i < 5; i++)
    {
 
        // Sum of distance travelled
        distance_traveled_A += A[i];
        distance_traveled_B += B[i];
 
        // Condition for traveling
        // together
        if ((distance_traveled_A ==
             distance_traveled_B) &&
             (A[i] == B[i]))
        {
            answer += A[i];
        }
    }
    return answer;
}
 
// Driver code
public static void main (String[] args)
{
    int A[] = { 1, 2, 3, 2, 4 };
    int B[] = { 2, 1, 3, 1, 4 };
    int N = A.length;
     
    System.out.println(calc_distance(A, B, N));    
}
}
 
// This code is contributed by offbeat


Python3
# Python3 program to find the distance
# traveled together by the two trains
 
# Function to find the distance
# traveled together
def calc_distance(A, B, n):
 
    # Stores distance travelled by A
    distance_traveled_A = 0
 
    # Stpres distance travelled by B
    distance_traveled_B = 0
 
    # Stores the total distance
    # travelled together
    answer = 0
 
    for i in range(5):
 
        # Sum of distance travelled
        distance_traveled_A += A[i]
        distance_traveled_B += B[i]
 
        # Condition for traveling
        # together
        if ((distance_traveled_A ==
             distance_traveled_B) and
            (A[i] == B[i])):
            answer += A[i]
     
    return answer
 
# Driver Code
A = [ 1, 2, 3, 2, 4 ]
B = [ 2, 1, 3, 1, 4 ]
 
N = len(A)
 
print(calc_distance(A, B, N))
 
# This code is contributed by sanjoy_62


C#
// C# program to find the distance
// traveled together by the two trains
using System;
 
class GFG{
 
// Function to find the distance
// traveled together
static int calc_distance(int []A, int []B,
                         int n)
{
 
    // Stores distance travelled by A
    int distance_traveled_A = 0;
 
    // Stpres distance travelled by B
    int distance_traveled_B = 0;
 
    // Stores the total distance
    // travelled together
    int answer = 0;
 
    for(int i = 0; i < 5; i++)
    {
 
        // Sum of distance travelled
        distance_traveled_A += A[i];
        distance_traveled_B += B[i];
 
        // Condition for traveling
        // together
        if ((distance_traveled_A ==
             distance_traveled_B) &&
             (A[i] == B[i]))
        {
            answer += A[i];
        }
    }
    return answer;
}
 
// Driver Code
public static void Main(string []s)
{
    int []A = { 1, 2, 3, 2, 4 };
    int []B = { 2, 1, 3, 1, 4 };
    int N = A.Length;
 
    Console.Write(calc_distance(A, B, N));
}
}
 
// This code is contributed by rutvik_56


Javascript


输出:
3

时间复杂度: O(N)
辅助空间: O(1)