Stars

node v0.12.18

version: 2.0.0

We can use Array.join to quickly get us strings of a repeated character:

new Array(4).join("*")

Now, if we have a star count, we can create a single line easily (this example is with 4 stars):

var lineLength = 10; var starCount = 5; new Array(starCount + 1).join("*") + new Array(lineLength - starCount + 1).join("-")

Now, if we have an array of numbers of stars, we can map over it to create the final version:

[1,2,3,4,5,6,7,8,9,10].map(starCount => new Array(starCount + 1).join("*") + new Array(lineLength - starCount + 1).join("-"))

So with this, we can now make any pattern we want, just with an array of star counts. So let's make this our function:

function drawStars(starCounts) { return starCounts.map(starCount => new Array(starCount + 1).join("*") + new Array(lineLength - starCount + 1).join("-")).join("\n"); }

Here is the first one:

drawStars([1,2,3,4,5,6,7,8,9,10]);

And the second:

drawStars([1,2,3,4,5,5,4,3,2,1]);

25 comments

posted a month ago by xsjybldb
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posted a month ago by xsjybldb
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posted a month ago by xsjybldb
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posted a month ago by xsjybldb
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posted a month ago by xsjybldb
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posted a month ago by xsjybldb
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posted a month ago by xsjybldb
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posted a month ago by xsjybldb
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posted a month ago by xsjybldb
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posted a month ago by xsjybldb
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posted a month ago by xsjybldb
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posted a month ago by xsjybldb
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posted a month ago by xsjybldb
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posted a month ago by xsjybldb
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posted a month ago by xsjybldb
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posted a month ago by xsjybldb
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posted a month ago by xsjybldb
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