class Solution {
public int[] runningSum(int[] nums) {
int[] ans = new int[nums.length];
ans[0] = nums[0];
for (int i = 1; i < nums.length; i++)
ans[i] = ans[i-1] + nums[i];
return ans;
}
}
// Calculate the sum of all elements of an array
class Main {
public static void main(String[] args) {
// an array of numbers
int[] numbers = {3, 4, 5, -5, 0, 12};
int sum = 0;
// iterating through each element of the array
for (int number: numbers) {
sum += number;
}
System.out.println("Sum = " + sum);
}
}
class Solution {
public int[] runningSum(int[] nums) {
int[] sol = new int[nums.length];
sol[0] = nums[0];
for(int i = 1; i < nums.length; i++) {
sol[i] = sol[i-1] + nums[i];
}
return sol;
}
}
// Example: runningSum([1,3,6,9]) = [1, 4, 10, 19] = [1, 1+3, 1+3+6, 1+3+6+9]