Collatz conjecture

src/collatzConjection.js

@@ -0,0 +1,17 @@
+
+let arr = []
+export default function collatzConjecture(num){
+  if(num === 1){
+    arr.push(1)
+    return arr
+  }
+  if(num % 2 === 0){
+    arr.push(num)
+    num = num / 2
+    return collatzConjecture(num)
+  }else if(num % 2 !== 0){
+    arr.push(num)
+    num = num * 3 + 1
+    return collatzConjecture(num)
+  }
+}

src/collatzConjecture.js

@@ -0,0 +1,17 @@
+
+let arr = []
+export default function collatzConjecture(num){
+  if(num === 1){
+    arr.push(1)
+    return arr
+  }
+  if(num % 2 === 0){
+    arr.push(num)
+    num = num / 2
+    return collatzConjecture(num)
+  }else if(num % 2 !== 0){
+    arr.push(num)
+    num = num * 3 + 1
+    return collatzConjecture(num)
+  }
+}

src/comment from make_change.js

@@ -0,0 +1,128 @@
+/*const useQaurter = function(amountGiven, price) {
+    amountGiven = amountGiven - 25
+    coins.qaurters++
+    return amountGiven
+
+    //console.log(amountGiven)
+  } 
+
+
+
+
+  const useDime = function(amountGiven, price) {
+    amountGiven = amountGiven - 10
+    coins.dimes++
+    return amountGiven
+
+    //console.log(amountGiven)
+  }
+
+
+
+  const useNickel = function(amountGiven, price) {
+    amountGiven = amountGiven - 5
+    coins.nickels++
+    return amountGiven
+
+    //console.log(amountGiven)
+  }  
+
+
+
+  const usePenny = function(amountGiven, price) {
+    amountGiven = amountGiven - 1
+    coins.pennies++
+    return amountGiven
+
+    //console.log(amountGiven)
+  }  
+
+  function makeChange({price, amountGiven}) { 
+	  let results = {}
+	  if(price === amountGiven) {
+
+	    results.quarters = coins.quarters
+	    results.dimes = coins.dimes
+	    results.nickels = coins.nickels
+	    results.pennies = coins.pennies
+
+	    coins.quarters = 0
+	    coins.dimes = 0
+	    coins.nickels = 0
+	    coins.pennies = 0
+
+
+    }
+
+    if( difference >= 25 ) {
+      amountGiven = takeQuarter(amountGiven, coins)
+      return makeChange({price: price, amountGiven: amountGiven})
+    }else if( difference >= 10) {
+      amountGiven = takeDime(amountGiven, price)
+      return makeChange({price: price, amountGiven: amountGiven})
+    }else if(difference >= 5){
+      amountGiven = takeNickel(amountGiven, price)
+      return makeChange({price: price, amountGiven: amountGiven})
+    }else if(difference >= 1){
+      amountGiven = takePenny(amountGiven, price)
+      return makeChange({price: price, amountGiven: amountGiven})
+      }
+  }
+this worked
+
+function makeChange({price, amountGiven}) { 
+
+  const coins = {
+  // quarters: 0,
+  // dimes: 0,
+  // nickels: 0,
+  pennies: 0,
+  }
+
+ let difference = amountGiven - price 
+
+  coins.pennies = difference
+ return coins
+
+}
+
+export default function makeChange({price, amountGiven}) { 
+
+  const coins = {
+  quarters: 0,
+  dimes: 0,
+  nickels: 0,
+  pennies: 0,
+  }
+
+ let difference = amountGiven - price 
+
+ let quarterValue = 25,
+ let dimeValue = 10,
+ let pennyValue = 1,
+ let nickelValue = 5,
+
+
+ let numberOfNickels = Math.floor(difference / nickelValue )
+let numberOfPennies = Math.floor(difference / pennyValue )
+let numberOfDimes = Math.floor(difference / dimeValue )
+let numberOfQuarters = Math.floor(difference / quarterValue )
+
+
+
+ let numberOfPennies = difference
+ let numberOfNickels = difference
+ let numberOfDimes = difference
+ let numberOfQuarters = difference
+
+
+ coins.nickels = numberOfNickels
+ coins.pennies = numberOfPennies
+ coins.dimes = numberOfDimes
+ coins.quarters = numberOfQuarters
+
+
+
+ return coins
+
+}

src/makeChange.js

@@ -1,3 +1,54 @@
+const coins = {
+  quarters: 0,
+  dimes: 0,
+  nickels: 0,
+  pennies: 0
+}
+const takeQuarter = function(amountGiven, price){
+  amountGiven = amountGiven - 25
+  coins.quarters++
+  return amountGiven
+}
+const takeDime = function(amountGiven, price){
+  amountGiven = amountGiven - 10
+  coins.dimes++
+  return amountGiven
+}
+const takeNickel = function(amountGiven, price){
+  amountGiven = amountGiven - 5
+  coins.nickels++
+  return amountGiven
+}
+const takePenny = function(amountGiven, price){
+  amountGiven = amountGiven - 1
+  coins.pennies++
+  return amountGiven
+}
 export default function makeChange({price, amountGiven}) {
-  // your code here
+  let results = {}
+  if(price === amountGiven) {
+    results.quarters = coins.quarters
+    results.dimes = coins.dimes
+    results.nickels = coins.nickels
+    results.pennies = coins.pennies
+
+    coins.quarters = 0
+    coins.dimes = 0
+    coins.nickels = 0
+    coins.pennies = 0
+    return results
+  }
+  if(amountGiven - price >= 25){
+    amountGiven = takeQuarter(amountGiven, coins)
+    return makeChange({price: price, amountGiven: amountGiven})
+  }else if(amountGiven - price >= 10){
+    amountGiven = takeDime(amountGiven, price)
+    return makeChange({price: price, amountGiven: amountGiven})
+  }else if(amountGiven - price >= 5){
+    amountGiven = takeNickel(amountGiven, price)
+    return makeChange({price: price, amountGiven: amountGiven})
+  }else if(amountGiven - price >= 1){
+    amountGiven = takePenny(amountGiven, price)
+    return makeChange({price: price, amountGiven: amountGiven})
+  }
 }

test/collatzConjection_test.js

@@ -0,0 +1,15 @@
+import { expect } from 'chai'
+import collatzConjecture from '../src/collatzConjecture'
+
+describe('collatzConjecture()', function(){
+
+  it('should be a function', function(){
+    expect(collatzConjecture).to.be.a('function')
+  })
+
+  it('take a number a perform an evaluation based on what the current number is then returns an array', function(){
+    expect(collatzConjecture(7)).to.eql([7, 22, 11, 34, 17, 52, 26, 13, 40, 20, 10, 5, 16, 8, 4, 2, 1])
+    expect(collatzConjecture(12)).to.eql([ 7,22,11,34,17,52,26,13,40,20,10,
+    5,16,8,4,2,1,12,6,3,10,5,16,8,4,2,1])
+  })
+})

test/collatzConjecture_test.js

@@ -0,0 +1,15 @@
+import { expect } from 'chai'
+import collatzConjecture from '../src/collatzConjecture'
+
+describe('collatzConjecture()', function(){
+
+  it('should be a function', function(){
+    expect(collatzConjecture).to.be.a('function')
+  })
+
+  it('take a number a perform an evaluation based on what the current number is then returns an array', function(){
+    expect(collatzConjecture(7)).to.eql([7, 22, 11, 34, 17, 52, 26, 13, 40, 20, 10, 5, 16, 8, 4, 2, 1])
+    expect(collatzConjecture(12)).to.eql([ 7,22,11,34,17,52,26,13,40,20,10,
+    5,16,8,4,2,1,12,6,3,10,5,16,8,4,2,1])
+  })
+})