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50 lines
1.6 KiB
HTML
50 lines
1.6 KiB
HTML
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<p>You are given a positive integer <code>n</code>. Each digit of <code>n</code> has a sign according to the following rules:</p>
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<ul>
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<li>The <strong>most significant digit</strong> is assigned a <strong>positive</strong> sign.</li>
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<li>Each other digit has an opposite sign to its adjacent digits.</li>
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</ul>
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<p>Return <em>the sum of all digits with their corresponding sign</em>.</p>
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<p> </p>
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<p><strong class="example">Example 1:</strong></p>
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<pre>
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<strong>Input:</strong> n = 521
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<strong>Output:</strong> 4
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<strong>Explanation:</strong> (+5) + (-2) + (+1) = 4.
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</pre>
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<p><strong class="example">Example 2:</strong></p>
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<pre>
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<strong>Input:</strong> n = 111
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<strong>Output:</strong> 1
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<strong>Explanation:</strong> (+1) + (-1) + (+1) = 1.
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</pre>
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<p><strong class="example">Example 3:</strong></p>
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<pre>
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<strong>Input:</strong> n = 886996
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<strong>Output:</strong> 0
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<strong>Explanation:</strong> (+8) + (-8) + (+6) + (-9) + (+9) + (-6) = 0.
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</pre>
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<p> </p>
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<p><strong>Constraints:</strong></p>
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<ul>
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<li><code>1 <= n <= 10<sup>9</sup></code></li>
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</ul>
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<p> </p>
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<style type="text/css">.spoilerbutton {display:block; border:dashed; padding: 0px 0px; margin:10px 0px; font-size:150%; font-weight: bold; color:#000000; background-color:cyan; outline:0;
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}
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.spoiler {overflow:hidden;}
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.spoiler > div {-webkit-transition: all 0s ease;-moz-transition: margin 0s ease;-o-transition: all 0s ease;transition: margin 0s ease;}
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.spoilerbutton[value="Show Message"] + .spoiler > div {margin-top:-500%;}
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.spoilerbutton[value="Hide Message"] + .spoiler {padding:5px;}
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</style>
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