这是如何做：
// Create an array with room for 100 integersint[] nums = new int[100];// Fill it with numbers using a for-loopfor (int i = 0; i < nums.length; i++) nums[i] = i + 1; // +1 since we want 1-100 and not 0-99// Compute sumint sum = 0;for (int n : nums) sum += n;// Print the result (5050)System.out.println(sum);
