|
| 1 | +/* |
| 2 | +Large Sum |
| 3 | +
|
| 4 | +Work out the first ten digits of the sum of the following one-hundred 50-digit numbers. |
| 5 | +*/ |
| 6 | + |
| 7 | +const numbers = [ |
| 8 | + 37107287533902102798797998220837590246510135740250, |
| 9 | + 46376937677490009712648124896970078050417018260538, |
| 10 | + 74324986199524741059474233309513058123726617309629, |
| 11 | + 91942213363574161572522430563301811072406154908250, |
| 12 | + 23067588207539346171171980310421047513778063246676, |
| 13 | + 89261670696623633820136378418383684178734361726757, |
| 14 | + 28112879812849979408065481931592621691275889832738, |
| 15 | + 44274228917432520321923589422876796487670272189318, |
| 16 | + 47451445736001306439091167216856844588711603153276, |
| 17 | + 70386486105843025439939619828917593665686757934951, |
| 18 | + 62176457141856560629502157223196586755079324193331, |
| 19 | + 64906352462741904929101432445813822663347944758178, |
| 20 | + 92575867718337217661963751590579239728245598838407, |
| 21 | + 58203565325359399008402633568948830189458628227828, |
| 22 | + 80181199384826282014278194139940567587151170094390, |
| 23 | + 35398664372827112653829987240784473053190104293586, |
| 24 | + 86515506006295864861532075273371959191420517255829, |
| 25 | + 71693888707715466499115593487603532921714970056938, |
| 26 | + 54370070576826684624621495650076471787294438377604, |
| 27 | + 53282654108756828443191190634694037855217779295145, |
| 28 | + 36123272525000296071075082563815656710885258350721, |
| 29 | + 45876576172410976447339110607218265236877223636045, |
| 30 | + 17423706905851860660448207621209813287860733969412, |
| 31 | + 81142660418086830619328460811191061556940512689692, |
| 32 | + 51934325451728388641918047049293215058642563049483, |
| 33 | + 62467221648435076201727918039944693004732956340691, |
| 34 | + 15732444386908125794514089057706229429197107928209, |
| 35 | + 55037687525678773091862540744969844508330393682126, |
| 36 | + 18336384825330154686196124348767681297534375946515, |
| 37 | + 80386287592878490201521685554828717201219257766954, |
| 38 | + 78182833757993103614740356856449095527097864797581, |
| 39 | + 16726320100436897842553539920931837441497806860984, |
| 40 | + 48403098129077791799088218795327364475675590848030, |
| 41 | + 87086987551392711854517078544161852424320693150332, |
| 42 | + 59959406895756536782107074926966537676326235447210, |
| 43 | + 69793950679652694742597709739166693763042633987085, |
| 44 | + 41052684708299085211399427365734116182760315001271, |
| 45 | + 65378607361501080857009149939512557028198746004375, |
| 46 | + 35829035317434717326932123578154982629742552737307, |
| 47 | + 94953759765105305946966067683156574377167401875275, |
| 48 | + 88902802571733229619176668713819931811048770190271, |
| 49 | + 25267680276078003013678680992525463401061632866526, |
| 50 | + 36270218540497705585629946580636237993140746255962, |
| 51 | + 24074486908231174977792365466257246923322810917141, |
| 52 | + 91430288197103288597806669760892938638285025333403, |
| 53 | + 34413065578016127815921815005561868836468420090470, |
| 54 | + 23053081172816430487623791969842487255036638784583, |
| 55 | + 11487696932154902810424020138335124462181441773470, |
| 56 | + 63783299490636259666498587618221225225512486764533, |
| 57 | + 67720186971698544312419572409913959008952310058822, |
| 58 | + 95548255300263520781532296796249481641953868218774, |
| 59 | + 76085327132285723110424803456124867697064507995236, |
| 60 | + 37774242535411291684276865538926205024910326572967, |
| 61 | + 23701913275725675285653248258265463092207058596522, |
| 62 | + 29798860272258331913126375147341994889534765745501, |
| 63 | + 18495701454879288984856827726077713721403798879715, |
| 64 | + 38298203783031473527721580348144513491373226651381, |
| 65 | + 34829543829199918180278916522431027392251122869539, |
| 66 | + 40957953066405232632538044100059654939159879593635, |
| 67 | + 29746152185502371307642255121183693803580388584903, |
| 68 | + 41698116222072977186158236678424689157993532961922, |
| 69 | + 62467957194401269043877107275048102390895523597457, |
| 70 | + 23189706772547915061505504953922979530901129967519, |
| 71 | + 86188088225875314529584099251203829009407770775672, |
| 72 | + 11306739708304724483816533873502340845647058077308, |
| 73 | + 82959174767140363198008187129011875491310547126581, |
| 74 | + 97623331044818386269515456334926366572897563400500, |
| 75 | + 42846280183517070527831839425882145521227251250327, |
| 76 | + 55121603546981200581762165212827652751691296897789, |
| 77 | + 32238195734329339946437501907836945765883352399886, |
| 78 | + 75506164965184775180738168837861091527357929701337, |
| 79 | + 62177842752192623401942399639168044983993173312731, |
| 80 | + 32924185707147349566916674687634660915035914677504, |
| 81 | + 99518671430235219628894890102423325116913619626622, |
| 82 | + 73267460800591547471830798392868535206946944540724, |
| 83 | + 76841822524674417161514036427982273348055556214818, |
| 84 | + 97142617910342598647204516893989422179826088076852, |
| 85 | + 87783646182799346313767754307809363333018982642090, |
| 86 | + 10848802521674670883215120185883543223812876952786, |
| 87 | + 71329612474782464538636993009049310363619763878039, |
| 88 | + 62184073572399794223406235393808339651327408011116, |
| 89 | + 66627891981488087797941876876144230030984490851411, |
| 90 | + 60661826293682836764744779239180335110989069790714, |
| 91 | + 85786944089552990653640447425576083659976645795096, |
| 92 | + 66024396409905389607120198219976047599490197230297, |
| 93 | + 64913982680032973156037120041377903785566085089252, |
| 94 | + 16730939319872750275468906903707539413042652315011, |
| 95 | + 94809377245048795150954100921645863754710598436791, |
| 96 | + 78639167021187492431995700641917969777599028300699, |
| 97 | + 15368713711936614952811305876380278410754449733078, |
| 98 | + 40789923115535562561142322423255033685442488917353, |
| 99 | + 44889911501440648020369068063960672322193204149535, |
| 100 | + 41503128880339536053299340368006977710650566631954, |
| 101 | + 81234880673210146739058568557934581403627822703280, |
| 102 | + 82616570773948327592232845941706525094512325230608, |
| 103 | + 22918802058777319719839450180888072429661980811197, |
| 104 | + 77158542502016545090413245809786882778948721859617, |
| 105 | + 72107838435069186155435662884062257473692284509516, |
| 106 | + 20849603980134001723930671666823555245252804609722, |
| 107 | + 53503534226472524250874054075591789781264330331690 |
| 108 | +] |
| 109 | + |
| 110 | +const findFirstTenDigitsOfSum = () => { |
| 111 | + const sum = numbers.reduce((prev, current) => { |
| 112 | + current += prev |
| 113 | + return current |
| 114 | + }, 0) |
| 115 | + |
| 116 | + return sum.toLocaleString('fullwide', { useGrouping: false }).split('').slice(0, 10).join('') |
| 117 | +} |
| 118 | + |
| 119 | +console.log(findFirstTenDigitsOfSum()) |
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