How to generate random numbers with in the range in Salesforce - Salesforce Globe For You
Solution: For example the random numbers with in the range 995-1000 needs to be generated.
Apex Class:RandomNumberGenerator
Public class RandomNumberGenerator {
public static List<Integer> generateRandomNumbers(Integer Min,Integer Max) {
List<Integer> lstRandomNumber = new List<Integer>();
Integer totalNumber = Max-Min;
Integer len = string.valueOf(Max).length();
Integer maxRange = 1;
for(integer i=0; i<len; i++) {
maxRange = maxRange *10;
}
while(lstRandomNumber.size() <= totalNumber){
Integer randomNumber;
Boolean doWhileCondition = true;
do {
randomNumber = (math.random() * maxRange).intValue();
if(randomNumber >= Min && randomNumber <= Max && !lstRandomNumber.contains(randomNumber)) {
lstRandomNumber.add(randomNumber);
doWhileCondition = false;
}
} while (doWhileCondition);
}
return lstRandomNumber;
}
}
Output: run the following code in Developer console
List<Integer> lstRandomNumber = new List<Integer>();
lstRandomNumber = RandomNumberGenerator.generateRandomNumbers(995,1000);
system.debug('Random Numbers: '+lstRandomNumber);
