number with the sum of the squares of its argits unth it either becomes i (nappy) or enters a cycle
that never reaches 1 (unhappy). For example: 1912+92 = 8282 +22=686²+82 = 100
→12+02+0² = 1 → Happy.
1. class happyNumber {
public static void main(String[] args) {
Scanner sc
Scanner(System.in);
System.out.print("Enter a number to check: ");
int num=sc.nextInt();
if (isHappy (num)) {
} else {
System.out.println(num + " is a Happy Number.");
System.out.println(num + " is NOT a Happy Number.");
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}
13.
}
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public static boolean isHappy(int n) {
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int slow = n;
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int fast sumofSquares (n);
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while (fast != 1 && slow != fast) {
20.
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slow sumofSquares (slow);
fast = sumofSquares (sumOfSquares (fast));
22.
}
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