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Added Insertion Sort Algo #23

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Added Insertion Sort Algo #23

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45 changes: 45 additions & 0 deletions C++/insertionsort.cpp
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Original file line number Diff line number Diff line change
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// C++ program for insertion sort

#include <bits/stdc++.h>
using namespace std;


void insertionSort(int arr[], int n)
{
int i, key, j;
for (i = 1; i < n; i++)
{
key = arr[i];
j = i - 1;


while (j >= 0 && arr[j] > key)
{
arr[j + 1] = arr[j];
j = j - 1;
}
arr[j + 1] = key;
}
}


void printArray(int arr[], int n)
{
int i;
for (i = 0; i < n; i++)
cout << arr[i] << " ";
cout << endl;
}

// Driver code
int main()
{
int arr[] = { 12, 11, 13, 5, 6 };
int N = sizeof(arr) / sizeof(arr[0]);

insertionSort(arr, N);
printArray(arr, N);

return 0;
}