how to create tringular pattern in javascript by diff diff methods

function createTriangularPattern(str) {
  let pattern = '';
  for (let i = 0; i < str.length; i++) {
    // We need to use `i + 1` instead of `i` to include the current character
    pattern += '*'.repeat(i + 1); // Increment by 1 to include the current character
    if (i < str.length - 1) {
      pattern += '\n'; // Add a new line for the next row
    }
  }
  return pattern;
}

console.log(createTriangularPattern("******************"));
// output
// *
// **
// ***
// ****
// *****
// ******

02.

function createTriangularPattern(str) {
  return str.split('').reduce((pattern, char, index) => {
  
    if (index < str.length - 1) {
      pattern += '*'.repeat(index);
      pattern += '\n'; // Use '\n' for a new line
    }
    return pattern;
  }, '');
}

console.log(createTriangularPattern("*****"));

03.

function createTriangularPattern(str) {
    let pattern = '';
    for (let i = 0; i < str.length; i++) {
        for (let j = 0; j <= i; j++) {
            pattern += '*';
        }
        if (i < str.length - 1) {
            pattern += '\n'; // Add a new line for the next row
        }
    }
    return pattern;
}

console.log(createTriangularPattern("******************"));