Question

How to calculate the Pascal triangle in Node.js

Answer 1

const rows = 6;
       
for (let i = 0; i < rows; i++) {
    let number = 1;
    let s = "";   
     
    for (let j = 0; j < (rows- i) * 2; j++) {
        s += " ";
    }
  
    for (let j = 0; j <= i; j++) {
        s += "   " + number;
        number = number * (i - j) / (j + 1);
    }
     
    console.log(s);
}
 
 
 
          
/*
run:
  
               1
             1   1
           1   2   1
         1   3   3   1
       1   4   6   4   1
     1   5   10   10   5   1
       
*/

 

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