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Insertion sort using java
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57 lines (48 loc) · 1.28 KB
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import java.io.*;
import java.util.*;
public class Main {
public static void insertionSort(int[] arr) {
for(int i=1;i<arr.length;i++){
for(int j=i-1;j>=0;j--){
if(isGreater(arr,j,j+1)){
swap(arr,j,j+1);
}
else{
break;
}
}
}
//write your code here
}
// used for swapping ith and jth elements of array
public static void swap(int[] arr, int i, int j) {
System.out.println("Swapping " + arr[i] + " and " + arr[j]);
int temp = arr[i];
arr[i] = arr[j];
arr[j] = temp;
}
// return true if jth element is greater than ith element
public static boolean isGreater(int[] arr, int j, int i) {
System.out.println("Comparing " + arr[i] + " and " + arr[j]);
if (arr[i] < arr[j]) {
return true;
} else {
return false;
}
}
public static void print(int[] arr) {
for (int i = 0; i < arr.length; i++) {
System.out.println(arr[i]);
}
}
public static void main(String[] args) throws Exception {
Scanner scn = new Scanner(System.in);
int n = scn.nextInt();
int[] arr = new int[n];
for (int i = 0; i < n; i++) {
arr[i] = scn.nextInt();
}
insertionSort(arr);
print(arr);
}
}