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wkoch/1. SICP.js

Last active August 8, 2020 23:37
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  1. wkoch renamed this gist Aug 8, 2020. 1 changed file with 0 additions and 0 deletions.
    0 SICP.js → 1. SICP.js
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  2. wkoch created this gist Aug 8, 2020.
    26 changes: 26 additions & 0 deletions Ex1.1.js
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    console.log(10);
    console.log(5 + 3 + 4);
    console.log(9 - 1);
    console.log(6 / 2);
    console.log((2 * 4) + (4 - 6));

    let a = 3;
    let b = a + 1;

    console.log(a + b + (a * b))

    console.log(a == b)

    console.log(((a > b) && (b < (a * b))) ? b : a);

    if (a == 4) {
    console.log(6);
    } else if (b == 4) {
    console.log(6 + 7 + a);
    } else {
    console.log(25);
    }

    let maior = (a, b) => { return (a >= b ? a : b);}

    console.log(2 + (maior(a, b)));
    13 changes: 13 additions & 0 deletions Ex1.3.js
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    let square = (n) => {return n * n;}

    let sumOfSquares = (a, b, c) => {
    if ((a > b) && (b > c)) {
    return (square(a)) + (square(b));
    } else if ((a > b) && (b < c)) {
    return (square(a)) + (square(c));
    } else {
    return (square(b)) + (square(c));
    }
    }

    console.log(sumOfSquares(2, 3, 4));
    30 changes: 30 additions & 0 deletions Newton Approximate SQUARE ROOT.js
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    let average = (x, y) => {
    return ((x + y) / 2);
    }

    let improve = (guess, x) => {
    return average(guess, (x / guess));
    }

    let square = (x) => { return x * x;}

    let good_enough = (guess, x) => {
    return (Math.abs(square(guess) - x) < 0.001);
    }

    let sqrt_iter = (guess, x) => {
    if (good_enough(guess, x)) {
    return guess;
    } else {
    return sqrt_iter(improve(guess, x), x);
    }
    }

    let sqrt = (x) => { return sqrt_iter(1.0, x);}

    // Examples

    console.log(sqrt(9));
    console.log(sqrt(100 + 37));
    console.log(sqrt(sqrt(2)) + sqrt(3));
    console.log(square(sqrt(1000)));
    1 change: 1 addition & 0 deletions SICP.js
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    // Javascript implementation of the SICP exercises