Day 58: Pattern using loops of 100DaysCodingChallenge

Hello all, 

#day58 

Day58 

Today's my task was to Print the below Pattern using loops.

Pascal Triangle Numbers Pattern

1
1 1
1 2 1
1 3 3 1
1 4 6 4 1

1 5 10 10 5 1

I have started the 100 days of coding challenge to improve my programming skills..

Code : 

let a = prompt("Enter a number : ");


let numRows = a;

var generate = function(numRows) {
    let triangle = [[1], [1,1]]
    
    if(numRows === 0){
        return []
    } else if(numRows == 1){
        return [[1]]       
    } else if(numRows == 2){
        return  [[1], [1,1]]
    } else {      
        for(let i = 2; i < numRows; i++){       
            addRow(triangle)
        }
    }
    return triangle
    
};
var addRow = function(triangle){
    let previous = triangle[triangle.length - 1]
    let newRow = [1]
    for(let i = 0; i < previous.length - 1; i++){
        let current = previous[i]
        let next = previous[i+1] 
        newRow.push(current + next)
    }
    newRow.push(1)
    return triangle.push(newRow)
    
}

//console.log(generate(a));


const pascalTriangle = n => {
    const arr = []
    
    for (let i = 0; i < n; i++) {
        const row = [1]
        
        for (let j = 1; j < i; j++) {
            row.push(arr[i-1][j-1] + arr[i-1][j])
        }
        
        if( i > 0 ) row.push(1)
        
        arr.push(row)
    }
    
    return arr
}

console.log(pascalTriangle(a));

Output :     

 

Happy Coding:)

Day 58 Of 100 Days Coding Challenge

Thank you...