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Sum of Positive Numbers in Java Array
Sum of Positive Numbers in Java Array
Description:
Given an array arr[] of integers, find and print the sum of all positive numbers in the array.
Example 1:
Input: arr = {10, -5, 20, -3, 7}
Output: Sum of positive numbers = 37
Explanation: The positive numbers in the array are 10, 20, and 7. Their sum is 37.
Example 2:
Input: arr = Array = {-8, -12, -5, -2}
Output: Sum of positive numbers = 0
Explanation: There are no positive numbers in the array, so the sum is 0.
Constraints:
The array length |arr| is at least 1 and at most 10^5.
Java Code:
public class HackerAlgo {
// Sum of Positive Numbers
public static int sumOfPositiveNumbers(int[] arr) {
int sum = 0;
// Traverse the array and add positive numbers to the sum
for (int num :arr) {
if (num> 0) {
sum += num;
}
}
return sum;
}
public static void main(String[] args) {
// Example for Sum of Positive Numbers
int[] arr1 = {10, -5, 20, -3, 7};
System.out.println("Sum of positive numbers: " + sumOfPositiveNumbers(arr1));
int[] arr2 = {-8, -12, -5, -2};
System.out.println("Sum of positive numbers: " + sumOfPositiveNumbers(arr2));Python Code:
# Sum of Positive Numbers
def sum_of_positive_numbers(arr):
# Sum of positive numbers
return sum(num for num in arr if num> 0)
# Example usage
arr1 = [10, -5, 20, -3, 7]
print("Sum of positive numbers:", sum_of_positive_numbers(arr1))
arr2 = [-8, -12, -5, -2]
print("Sum of positive numbers:", sum_of_positive_numbers(arr2))
C++ Code:
#include <iostream>
#include <vector>
class HackerAlgo {
public:
// Sum of Positive Numbers
static int sumOfPositiveNumbers(const std::vector<int>&arr) {
int sum = 0;
// Traverse the array and add positive numbers to the sum
for (int num :arr) {
if (num> 0) {
sum += num;
}
}
return sum;
}
};
int main() {
// Example for Sum of Positive Numbers
std::vector<int> arr1 = {10, -5, 20, -3, 7};
std::cout<< "Sum of positive numbers: " << HackerAlgo::sumOfPositiveNumbers(arr1) << std::endl;
std::vector<int> arr2 = {-8, -12, -5, -2};
std::cout<< "Sum of positive numbers: " << HackerAlgo::sumOfPositiveNumbers(arr2) << std::endl;
return 0;
}
JavaScript Code:
class HackerAlgo {
// Sum of Positive Numbers
static sumOfPositiveNumbers(arr) {
// Sum of positive numbers
return arr.reduce((sum, num) =>num> 0 ? sum + num : sum, 0);
}
}
// Example usage
const arr1 = [10, -5, 20, -3, 7];
console.log("Sum of positive numbers:", HackerAlgo.sumOfPositiveNumbers(arr1));
const arr2 = [-8, -12, -5, -2];
console.log("Sum of positive numbers:", HackerAlgo.sumOfPositiveNumbers(arr2));
