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Other 2021-08-27 11:40:02
Given an array of integers arr, write a function that returns true if and only if the number of occurrences of each value in the array is unique. using hashmap
import java.util.*; class Solution { public boolean uniqueOccurrences(int[] arr) { HashMap<Integer,Integer> hash = new HashMap<>(); for(int i = 0;i<arr.length;i++){ if(hash.containsKey(arr[i])){ ... Add solution -
Java 2021-08-27 09:45:01
save bitmap file for share on android 10
private void saveImage(Bitmap bitmap, @NonNull String name) throws IOException { boolean saved; OutputStream fos; if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) { ContentResolver resolver = mContext.getContentResolver(); ... Add solution -
Shell/Bash 2021-08-27 09:09:01
android check if package is installed
import android.content.pm.PackageManager; public boolean isPackageExisted(String targetPackage){ PackageManager pm=getPackageManager(); try { PackageInfo info=pm.getPackageInfo(targetPackage,PackageManager.GET_META_DATA); } catch (Package... Add solution