Question

Street Lights
One of the streets in your city has a total of L street lights. Each light i covers the street from
Xi to Yi distance. Find the length of street covered with light.
Input Specification:
input1: L, denoting the number of street lights.
input2: An array of L* 2 elements. For each row i, (Xi, Yi) denote that the
street light i covers the distance from Xi to Yi.
Output Specification:
Your function should return the length of the street covered with light.
Example 1:
input1: 1
input2: {{5,10 } }
Output: 5​

answer

Answer 1

Answer:

Street Lights

One of the streets in your city has a total of L street lights. Each light i covers the street from

Xi to Yi distance. Find the length of street covered with light.

Input Specification:

input1: L, denoting the number of street lights.

input2: An array of L* 2 elements. For each row i, (Xi, Yi) denote that the

street light i covers the distance from Xi to Yi.

Output Specification:

Your function should return the length of the street covered with light.

Example 1:

input1: 1

input2: {{5,10 } }

output 5

shi hai