In this HackerRank Plus Minus problem solution, you have Given an array of integers, and calculate the ratios of its elements that are positive, negative, and zero. Print the decimal value of each fraction on a new line with 6 places after the decimal.
Problem solution in Python programming.
#!/bin/python3 import math import os import random import re import sys # Complete the plusMinus function below. def plusMinus(arr): x,z,y=0,0,0 for i in range(0,len(arr)): if arr[i]>0: x = x + 1 elif arr[i]<0: y = y + 1 else: z = z + 1 print(x/len(arr)) print(y/len(arr)) print(z/len(arr)) if __name__ == '__main__': n = int(input()) arr = list(map(int, input().rstrip().split())) plusMinus(arr)
Problem solution in Java Programming.
import java.text.DecimalFormat; import java.util.Scanner; public class Solution { public static void main(String args[]) { Scanner scan = new Scanner(System.in); int N=Integer.parseInt(scan.nextLine()); int arr[]= new int[N]; for(int i=0;i<N;i++) { arr[i]=scan.nextInt(); } scan.close(); double pos=0; double neg=0; double zero=0; for(int i=0;i<N;i++) { if(arr[i]>0) { pos=pos+1; } else if(arr[i]<0) { neg=neg+1; } else { zero=zero+1; } } DecimalFormat df= new DecimalFormat("#.000"); System.out.println(df.format(pos/N)); System.out.println(df.format(neg/N)); System.out.println(df.format(zero/N)); } }
Problem solution in C++ programming.
#include <cmath> #include <cstdio> #include <vector> #include <iostream> #include <algorithm> using namespace std; int main() { int N, n, total; float pos = 0., neg = 0., zer = 0.; cin >> N; total = N; while (N--) { cin >> n; if (n > 0) pos++; else if (n < 0) neg++; else zer++; } cout << pos / total << endl; cout << neg / total << endl; cout << zer / total << endl; return 0; }
Problem solution in C programming.
#include <stdio.h> #include <string.h> #include <math.h> #include <stdlib.h> int main() { int N,A[100],iTemp; float minus = 0,zeros = 0,plus = 0; scanf("%d",&N); for(iTemp=0;iTemp<N;iTemp++) { scanf("%d",&A[iTemp]); if(A[iTemp] > 0) { plus++; } else if(A[iTemp] == 0) { zeros++; } else { minus++; } } printf("%.3f\n%.3f\n%.3f\n",plus/N,minus/N, zeros/N); /* Enter your code here. Read input from STDIN. Print output to STDOUT */ return 0; }
Problem solution in JavaScript programming.
function processData(input) { //Enter your code here input = input.split("\n"); var n = input.shift(); input = input.shift().split(' '); var len = input.length; var neg = 0.0; var zero = 0.0; var pos = 0.0; input.forEach(function (num) { num = parseInt(num); if (num < 0) { neg++ } else if (num > 0) { pos++ } else { zero++ } }); console.log((pos / len).toPrecision(3)); console.log((neg / len).toPrecision(3)); console.log((zero / len).toPrecision(3)); } process.stdin.resume(); process.stdin.setEncoding("ascii"); _input = ""; process.stdin.on("data", function (input) { _input += input; }); process.stdin.on("end", function () { processData(_input); });
3 Comments
I didn't store the value of n in total and it gave me wrong answer(c++), don't know why this ones happening but found out something new today!
ReplyDeleteusing System.CodeDom.Compiler;
ReplyDeleteusing System.Collections.Generic;
using System.Collections;
using System.ComponentModel;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.Serialization;
using System.Text.RegularExpressions;
using System.Text;
using System;
class Result
{
/*
* Complete the 'plusMinus' function below.
*
* The function accepts INTEGER_ARRAY arr as parameter.
*/
public static void plusMinus(List arr)
{
var positiveCount =0;
var negativeCount =0;
var zeroCount = 0;
for (var i = 0; i < arr.Count(); i++)
{
if(arr[i] > 0)
{
positiveCount++;
}
else if(arr[i] < 0)
{
negativeCount ++;
}
else
{
zeroCount++;
}
}
Console.WriteLine(((double)positiveCount/arr.Count()).ToString("0.000000"));
Console.WriteLine(((double)negativeCount/arr.Count()).ToString("0.000000"));
Console.WriteLine(((double)zeroCount/arr.Count()).ToString("0.000000"));
}
}
class Solution
{
public static void Main(string[] args)
{
int n = Convert.ToInt32(Console.ReadLine().Trim());
List arr = Console.ReadLine().TrimEnd().Split(' ').ToList().Select(arrTemp => Convert.ToInt32(arrTemp)).ToList();
Result.plusMinus(arr);
}
}
Javascript solution doesnt work for any of the hackerrank challenges
ReplyDelete