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m1rsaid2021-12-07 09:39:59
C++ / C#
m1rsaid, 2021-12-07 09:39:59

How to remove negative numbers from an array?

Write a C++ program to create a dynamic array A[N], fill the array using a random number generator (get a random number in the interval [a,b] as a function (a=-30,b=30)). Sort the resulting array in decreasing order and write only positive numbers to the new array B[M], and remove the old array A from memory.
Arrange sorting of an array as a function.

#include<bits/stdc++.h>
using namespace std;
int main() {
int n, i, j;
cin » n;
float a [n];
for (i = 1; i <= n; i ++) {
a[i]=-30+rand()%60;
        cout«a[i]«"\t";
}
for (i = 1; i < n; i ++) {
for (j = i + 1; j <= n; j++) {
if (a[i]>0 && a [i] < a [j] ) { a [0] = a [i]; a [i] = a [j]; a [j] = a [0];}
}
}
cout«endl;
for (i = 1; i <= n; i++)
cout « a [i] « " ";
return 0;
}

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1 answer(s)
C
calculator212, 2021-12-08
@calculator212

How to remove negative numbers from an array?
there are two options, you can create a separate array, which will add numbers greater than -1 and then sort it, or remove negative numbers from the first array and reduce its length by the number of removed elements and then sort it.

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