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translation: Add Python and Java code for EN version (#1345)
* Add the intial translation of code of all the languages * test * revert * Remove * Add Python and Java code for EN version
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en/codes/java/chapter_searching/binary_search_insertion.java
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63
en/codes/java/chapter_searching/binary_search_insertion.java
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/**
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* File: binary_search_insertion.java
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* Created Time: 2023-08-04
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* Author: krahets (krahets@163.com)
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*/
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package chapter_searching;
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class binary_search_insertion {
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/* Binary search for insertion point (no duplicate elements) */
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static int binarySearchInsertionSimple(int[] nums, int target) {
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int i = 0, j = nums.length - 1; // Initialize double closed interval [0, n-1]
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while (i <= j) {
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int m = i + (j - i) / 2; // Calculate midpoint index m
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if (nums[m] < target) {
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i = m + 1; // Target is in interval [m+1, j]
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} else if (nums[m] > target) {
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j = m - 1; // Target is in interval [i, m-1]
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} else {
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return m; // Found target, return insertion point m
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}
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}
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// Did not find target, return insertion point i
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return i;
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}
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/* Binary search for insertion point (with duplicate elements) */
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static int binarySearchInsertion(int[] nums, int target) {
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int i = 0, j = nums.length - 1; // Initialize double closed interval [0, n-1]
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while (i <= j) {
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int m = i + (j - i) / 2; // Calculate midpoint index m
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if (nums[m] < target) {
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i = m + 1; // Target is in interval [m+1, j]
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} else if (nums[m] > target) {
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j = m - 1; // Target is in interval [i, m-1]
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} else {
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j = m - 1; // First element less than target is in interval [i, m-1]
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}
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}
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// Return insertion point i
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return i;
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}
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public static void main(String[] args) {
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// Array without duplicate elements
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int[] nums = { 1, 3, 6, 8, 12, 15, 23, 26, 31, 35 };
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System.out.println("\nArray nums = " + java.util.Arrays.toString(nums));
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// Binary search for insertion point
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for (int target : new int[] { 6, 9 }) {
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int index = binarySearchInsertionSimple(nums, target);
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System.out.println("The insertion point index for element " + target + " is " + index);
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}
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// Array with duplicate elements
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nums = new int[] { 1, 3, 6, 6, 6, 6, 6, 10, 12, 15 };
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System.out.println("\nArray nums = " + java.util.Arrays.toString(nums));
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// Binary search for insertion point
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for (int target : new int[] { 2, 6, 20 }) {
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int index = binarySearchInsertion(nums, target);
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System.out.println("The insertion point index for element " + target + " is " + index);
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}
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}
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}
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