Creating patterns in Angular - Struggling to achieve the expected result

Question

Creating patterns in Angular - Struggling to achieve the expected result

I am encountering a particular issue that I have been attempting to resolve through various methods. Unfortunately, despite my efforts, the current output is not aligning with what I desire. I would greatly appreciate it if someone could review my process and point out where I may be going wrong in order to achieve the desired outcome. I am working with an input number(n), which should fall within the range of 2 to 10. The task at hand involves validating whether the input value is outside of the expected range.

The output I am currently receiving is as follows:

If I enter n = 2:

A

B C

If I enter n = 3:

A

B C 

D E F

However, the outputs that I am aiming for are as follows:

Example 1. If I input n = 3, the corresponding output should look like this:

A

A B

C D E

Example 2: If I input n = 4, the resulting output should be displayed as follows:

A

A B

A B C

D E F G

Access the Stackblitz here.

javascript angular typescript pattern-matching

Answer 1

Answer №1

To modify the logic, follow these steps.

Start by breaking down the string into an array.

Next, utilize the slice function to set the start and end points.

Adjust the start and end positions to achieve the desired result.

For the last index specifically, extract from the final element to n characters, this will yield the expected outcome.

generateSeries(n: number): string[] {
  const alphabet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
  let series: string[] = [];
  let currentCharIndex = 0;

  for (let j = 1; j <= n; j++) {
    const alphaArray = alphabet.split('');
    const outputResult = j !== n ? alphaArray.slice(0, j) : alphaArray.slice(j - 1, j + n -1);
    console.log(outputResult);
    series.push(outputResult.join(' '));
  }

  return series;
}

Try Out Stackblitz Demo

Answer 2

To modify the logic, follow these steps.

Start by breaking down the string into an array.

Next, utilize the slice function to set the start and end points.

Adjust the start and end positions to achieve the desired result.

For the last index specifically, extract from the final element to n characters, this will yield the expected outcome.

generateSeries(n: number): string[] {
  const alphabet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
  let series: string[] = [];
  let currentCharIndex = 0;

  for (let j = 1; j <= n; j++) {
    const alphaArray = alphabet.split('');
    const outputResult = j !== n ? alphaArray.slice(0, j) : alphaArray.slice(j - 1, j + n -1);
    console.log(outputResult);
    series.push(outputResult.join(' '));
  }

  return series;
}

Creating patterns in Angular - Struggling to achieve the expected result

Answer №1

Try Out Stackblitz Demo

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