Problem 13 Vrite a function that takes a list and computes the alternating sum of all its elements. An alternating sum alternates between dding and subtracting elements. The example returns -2 because 1 – 4+9 – 16 +9 – 7 +4 – 9+11. Your function should eturn the alternating sum of a list. xample IO: lt-sum ([1.4.9.16.9.7.4.9.11]) #returns
Problem 13 Vrite a function that takes a list and computes the alternating sum of all its elements. An alternating sum alternates between dding and subtracting elements. The example returns -2 because 1 – 4+9 – 16 +9 – 7 +4 – 9+11. Your function should eturn the alternating sum of a list. xample IO: lt-sum ([1.4.9.16.9.7.4.9.11]) #returns
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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python problem
Expert Solution
Step 1
PROGRAM CODING:
#include<iostream.h>
using namespace std;
int alternate_sum(int ar[], int size)
{
int sign = 1, sum = 0;
for (int a = 0; a < size; ++a)
{
sum += sign*arr[a];
sign *= -1;
}
return sum;
}
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