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Challenge 216: Pi Day

curriculum/challenges/english/blocks/daily-coding-challenges-javascript/699c8e045ee7cb94ed2322d7.md

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--description--

Happy pi (π) day!

Given an integer (n), where n is between 1 and 1000 (inclusive), return the nth decimal of π.

  • Make sure to return a number not a string.

π with its first five decimals is 3.14159. So given 5 for example, return 9, the fifth decimal.

You may have to find the first 1000 decimals of π somewhere.

--hints--

getPiDecimal(5) should return 9.

js
assert.strictEqual(getPiDecimal(5), 9);

getPiDecimal(10) should return 5.

js
assert.strictEqual(getPiDecimal(10), 5);

getPiDecimal(22) should return 6.

js
assert.strictEqual(getPiDecimal(22), 6);

getPiDecimal(39) should return 7.

js
assert.strictEqual(getPiDecimal(39), 7);

getPiDecimal(76) should return 2.

js
assert.strictEqual(getPiDecimal(76), 2);

getPiDecimal(384) should return 4.

js
assert.strictEqual(getPiDecimal(384), 4);

getPiDecimal(601) should return 0.

js
assert.strictEqual(getPiDecimal(601), 0);

getPiDecimal(1000) should return 9.

js
assert.strictEqual(getPiDecimal(1000), 9);

--seed--

--seed-contents--

js
function getPiDecimal(n) {

  return n;
}

--solutions--

js
function getPiDecimal(n) {
  const pi = "31415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679821480865132823066470938446095505822317253594081284811174502841027019385211055596446229489549303819644288109756659334461284756482337867831652712019091456485669234603486104543266482133936072602491412737245870066063155881748815209209628292540917153643678925903600113305305488204665213841469519415116094330572703657595919530921861173819326117931051185480744623799627495673518857527248912279381830119491298336733624406566430860213949463952247371907021798609437027705392171762931767523846748184676694051320005681271452635608277857713427577896091736371787214684409012249534301465495853710507922796892589235420199561121290219608640344181598136297747713099605187072113499999983729780499510597317328160963185950244594553469083026425223082533446850352619311881710100031378387528865875332083814206171776691473035982534904287554687311595628638823537875937519577818577805321712268066130019278766111959092164201989"

  return Number(pi[n]);
}