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Find the Largest Number in Array
Find the Largest Number in Array
Description:
Find the largest number from an array of integers, considering both positive and negative numbers. Do not use any inbuilt methods for this operation.
Example 1:
Input: arr = [1, 5, -3, 2, 0, -8, 4]
Output: 5
Explanation: The largest number in the array is 5.
Example 2:
Input: arr = [-2, -7, 10, 4, -6, 8]
Output: 10
Explanation: The largest number in the array is 10.
Constraints:
The array length |arr| is at least 1 and at most 10^5. Elements in the array are integers ranging from -10^9 to 10^9.
Java Code:
public class HackerAlgo {
public static int findLargestNumber(int[] arr) {
if (arr.length == 0) {
throw new IllegalArgumentException("Array is empty");
}
int max = arr[0];
for (int num : arr) {
if (num> max) {
max = num;
}
}
return max;
}
public static void main(String[] args) {
int[] exampleArr = {1, 5, -3, 2, 0, -8, 4};
int result = findLargestNumber(exampleArr);
System.out.println(resultPython Code:
def find_largest_number(arr):
if not arr:
raise ValueError("Array is empty")
max_num = arr[0]
for num in arr:
if num>max_num:
max_num = num
return max_num
# Example usage
example_arr = [1, 5, -3, 2, 0, -8, 4]
result = find_largest_number(example_arr)
print(resultC++ Code:
#include <iostream>
#include <vector>
class HackerAlgo {
public:
static int findLargestNumber(const std::vector<int>&arr) {
if (arr.empty()) {
throw std::invalid_argument("Array is empty");
}
int max_num = arr[0];
for (int num : arr) {
if (num> max_num) {
max_num = num;
}
}
return max_num;
}
};
int main() {
// Example usage
std::vector<int>exampleArr = {1, 5, -3, 2, 0, -8, 4};
int result = HackerAlgo::findLargestNumber(exampleArr);
std::cout<< result << std::endl;
return 0JavaScript Code:
class HackerAlgo {
static findLargestNumber(arr) {
if (!arr.length) {
throw new Error("Array is empty");
}
let maxNum = arr[0];
for (let num of arr) {
if (num> maxNum) {
maxNum = num;
}
}
return maxNum;
}
}
// Example usage
constexampleArr = [1, 5, -3, 2, 0, -8, 4];
const result = HackerAlgo.findLargestNumber(exampleArr);
console.log(result