Concatenate two arrays
Array -- Concatenate two arrays
Write a return method that can concatenate two arrays
Solution:
public static int[] concatTwoArrays(int[] arr1 , int[] arr2) {
int[] result = new int[arr1.length + arr2.length];
int i = 0;
for(int each: arr1) {
result[i] = each;
i++;
}
for(int each: arr2) {
result[i] =each;
i++;
}
return result;
}addition of two arrays
int[] a = {10, 20 30, 40}; int[] b = {25, 50, 75, 100, 125}; int[] sum = new int[b.length]; for (int i = 0; i <= b.length; i++){ sum[i] = 0; /*initialize each of the sum values as zeroes, because that's what we usually start with*/ if (i > b.length){ /*if one array is longer than the other, just add zero the remaining elements in the largest array*/ sum[i] = b[i] + 0; else{ sum[i] = a[i] + b[i]; } } how to concatenate two arrays
var z = new int[x.Length + y.Length];
x.CopyTo(z, 0);
y.CopyTo(z, x.Length);concat two arrays
public static void main(String[] args) {
String[] arr3 = {"A", "B", "C","Z","N"};
String[] arr4 = {"D", "E", "F","G","U"};
ArrayList<String> list1 = new ArrayList<>();
// [A, B, C, Z, N, D, E, F, G, U]
for( String each: arr3 ){
list1.add( each );
}
for(String each1 : arr4 ){
list1.add(each1);
}
System.out.println(list1); // [A, B, C, Z, N, D, E, F, G, U]Copyright © 2021 Codeinu
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