# Create Largest Number From a List - Amazon Top Interview Questions

### Problem Statement :

```Given a list of integers nums, rearrange its order to form the largest possible integer and return it as a string.

Constraints

n ≤ 1,000 where n is the length of nums

nums[i] ≤ 1,000

Example 1

Input

nums = [10, 7, 76, 415]

Output

"77641510"

Example 2

Input

nums = [961, 745, 331, 794, 923]

Output

"961923794745331"

Example 3

Input

nums = [45, 14, 70, 67, 95]

Output

"9570674514"

Example 4

Input

nums = [70, 5, 94, 18, 78]

Output

"947870518"```

### Solution :

```                        ```Solution in C++ :

string solve(vector<int>& _nums) {
// if i have two numbers
// i can try both the ways to combine them
// and select the larger way!
vector<string> nums;
for (const int& num : _nums) {
nums.push_back(to_string(num));
}

// now i just sort these to give the biggest value
sort(nums.begin(), nums.end(), [](const string& a, const string& b) {
string ab = a + b, ba = b + a;
return ab > ba;
});

string res = "";
for (const string& num : nums) {
res += num;
}

return res;
}```
```

```                        ```Solution in Java :

import java.util.*;
import java.util.stream.Collectors;

class Solution {
public String solve(int[] nums) {
return Arrays.stream(nums)
.mapToObj(String::valueOf)
.sorted(Collections.reverseOrder((s1, s2) -> (s1 + s2).compareTo(s2 + s1)))
.collect(Collectors.joining());
}
}```
```

```                        ```Solution in Python :

class Number:
def __init__(self, n):
self.n = str(n)

def __lt__(self, other):
return self.n + other.n > other.n + self.n

def __str__(self):
return self.n

class Solution:
def solve(self, nums):
return ''.join(map(str, sorted(map(Number, nums))))```
```

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