Question

How to calculate the Collatz sequence for a range starting from 3 to 10 in TypeScript

Answer 1

function CalcCollatz(x: number) {
    if ((x & 1) != 0) {
        return x * 3 + 1;
    }
    return x / 2;
}

function PrintCollatzSequence(x: number) {
    let s: any = x;
    
    while (x != 1) {
        x = CalcCollatz(x);
        s += " " + x;
    }
    
    console.log(s);
}

for (let i: number = 3; i < 11; i++) {
    PrintCollatzSequence(i);
}



/*
run:

"3 10 5 16 8 4 2 1" 
"4 2 1" 
"5 16 8 4 2 1" 
"6 3 10 5 16 8 4 2 1" 
"7 22 11 34 17 52 26 13 40 20 10 5 16 8 4 2 1" 
"8 4 2 1" 
"9 28 14 7 22 11 34 17 52 26 13 40 20 10 5 16 8 4 2 1" 
"10 5 16 8 4 2 1" 

*/

 

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