HackerRank Separate the Numbers solution

In this HackerRank Separate the Number problem solution we need to Perform queries where each query consists of some integer string. For each query, print whether or not the string is beautiful on a new line. If it is beautiful, print YES x, where x is the first number of the increasing sequence. If there are multiple such values of x, choose the smallest. Otherwise, print NO.

Problem solution in Python

#!/bin/python3

import sys
import math

def generator(first,length):
    length = int(length)
    first = int(first)
    temp = first + 1
    s = str(first)
    s+=str(temp)
    for i in range(length):
        if(len(s) == int(length)):
            return s
        temp += 1
        s += str(temp)
        
q = int(input().strip())
for a0 in range(q):
    s = input().strip()
    for i in range(1,round(len(s)/2)+2):
        t = generator(s[:i],len(s))
        if t == s:
            print("YES" + " " + str(s[:i]))
            break
        elif (i >= (round(len(s)/2))):
            print("NO")
            break

Problem solution in Java

import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.function.*;
import java.util.regex.*;
import java.util.stream.*;
import static java.util.stream.Collectors.joining;
import static java.util.stream.Collectors.toList;

class Result {

    /*
     * Complete the 'separateNumbers' function below.
     *
     * The function accepts STRING s as parameter.
     */

    public static void separateNumbers(String s) {
        if(s==null || s.isEmpty()) return;

        for (int i = 1; i <= s.length()/2; i++) {
            String possibleStringWithStartingNumber = s.substring(0,i);
            Long startingNumber = Long.parseLong(possibleStringWithStartingNumber);
            // System.out.println("possible string with starting number = " + possibleStringWithStartingNumber);

            for (int j = i; j < s.length() && possibleStringWithStartingNumber.length()<s.length(); j+=i) {
                startingNumber++;
                possibleStringWithStartingNumber = possibleStringWithStartingNumber + startingNumber;
            }
            // System.out.println("possible string with starting number result = " + possibleStringWithStartingNumber);

            if(s.equals(possibleStringWithStartingNumber)) {
                System.out.println("YES " + s.substring(0,i));
                return;
            }
        }

        System.out.println("NO");    }

}

public class Solution {
    public static void main(String[] args) throws IOException {
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));

        int q = Integer.parseInt(bufferedReader.readLine().trim());

        IntStream.range(0, q).forEach(qItr -> {
            try {
                String s = bufferedReader.readLine();

                Result.separateNumbers(s);
            } catch (IOException ex) {
                throw new RuntimeException(ex);
            }
        });

        bufferedReader.close();
    }
}

Problem solution in C++

#include <bits/stdc++.h>

using namespace std;

long long getValue(string s, int start, int len)
{
	long long multiplier = 1;
	long long result = 0;
	if (start + len > s.length() || s[start] == 48)
	{
		return -1;
	}
	for (int i = start + len -1 ; i >=start ;i--)
	{
	result += ((char)s[i] - 48)*multiplier;
		multiplier *= 10;
	}
	return result;
}

long long solveSub(string s, int len)
{
	long long firstValue = getValue(s, 0, len);
	if (firstValue == -1)
	{
		return -1;
	}
	int currentPos = len;
	int lastLen = len;
	long long lastValue = firstValue;
	
	while (true)
	{
		long long val = getValue(s, currentPos, lastLen);
		if (val != -1 && val == lastValue + 1)
		{
			// if finished
			if (currentPos + lastLen == s.length())
			{
				return firstValue;
			}

			// go further
			currentPos += lastLen;
			lastValue = val;
			continue;
		}

		val = getValue(s, currentPos, lastLen + 1);
		if (val != -1 && val == lastValue + 1)
		{
			// if finished
			if (currentPos + lastLen +1 == s.length())
			{
				return firstValue;
			}

			// go further			
			lastLen++;
			currentPos += lastLen;
			lastValue = val;
			continue;
		}

		return -1;
	}
}

void solve(string s)
{
    for (int len = 1; len <= s.length()/2; len++)
    {
        long long val = solveSub(s, len);
        if (val != -1)
        {
            cout << "YES " << val << endl;
            return;
        }				
    }
	cout << "NO" <<  endl;
}

int main() {
	int q;
	cin >> q;
	for (int a0 = 0; a0 < q; a0++) {
		string s;
		cin >> s;
		solve(s);
	}
	return 0;
}

Problem solution in C

#include <math.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <limits.h>
#include <stdbool.h>

long myatol(char *s, int i, int j)
{
    long v = 0;
    int k;
    for (k = i; k < j; k++)
        v = v * 10 + (s[k] - '0');
    return v;
}
int main(){
    int q, a0; 
    scanf("%d",&q);
    for (a0 = 0; a0 < q; a0++) {
        int i, j, len, yes = 0;
        char buf[32];
        char* s = (char *)malloc(512000 * sizeof(char));
        long u, v;
        scanf("%s",s);
        len = strlen(s);
        for (i = 1; i <= len/2; i++) {
            int cmp = 0;
            u = myatol(s, 0, i);
            v = u;
            j = i;
            while (j < len) {
                int len1;
                sprintf(buf, "%lu", v+1);
                len1 = strlen(buf);
                cmp = strncmp(buf, &s[j], len1);
                if (cmp) break;
                v = v+1;
                j += len1;
            }
            if (0 == cmp) {
                yes = 1;
                break;
            }
        }
        if (yes)
            printf("YES %ld\n", u);
        else
            printf("NO\n");
            
        free(s);
    }
    return 0;
}

Problem solution in Javascript

process.stdin.resume();
process.stdin.setEncoding('ascii');

var input_stdin = "";
var input_stdin_array = "";
var input_currentline = 0;

process.stdin.on('data', function (data) {
    input_stdin += data;
});

process.stdin.on('end', function () {
    input_stdin_array = input_stdin.split("\n");
    main();    
});

function readLine() {
    return input_stdin_array[input_currentline++];
}

/////////////// ignore above this line ////////////////////

const nextNumber = s => {
    let i = s.length - 1
    
    if ( i > 0 && s.charAt(0) === '0' ) return "NaN"
    
    while(s.charAt(i) == '9' && i > 0) i--
    
    return s.substr(0,i) + (parseInt(s.substr(i,1))+1) + "0".repeat(s.length-1-i)
}


function separateNumbers(s) {
  
    if ( s.length > 32 ) return console.log("NO")
    
    for(let i = 1; (s.length/i) >= 2 && i <= 16; i++){
        let isBeautiful = true
        let length = i
        
        for(let j = 0 ; j < s.length;){
            let current = s.substr(j,length)
            let next = nextNumber(current)
            
            if ( s.length == (j+length) ) break
            else if ( s.length < j + next.length || s.substr(j+length,next.length) !== next ){
                isBeautiful = false
                break
            }
            
            j += current.length
            length = next.length
        }
        
        if (isBeautiful) return console.log('YES ' + s.substr(0,i))
    }
    
    return console.log('NO')
}

function main() {
    var q = parseInt(readLine());
    for(var a0 = 0; a0 < q; a0++){
        var s = readLine();
        separateNumbers(s);
    }

}

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